11.the Scope of Physics

8/20/2019 11.the Scope of Physics

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The Scope of Physics

1. The branch of physical science, which deals with interaction ofmatter and energy, is called __________.(Physics, Chemistry, Biology). The new era of modern physics began near the end of __________.

(1!th cent"ry, 1#th cent"ry, 1$th cent"ry)%. Screw and le&er were in&ented by __________.('ewton, "ygen, rchimedes)*. Phythagoras is famo"s in __________.(Physics, Chemistry, 'one of these)+. n the -eld of research the strong incenti&e comes from __________.(Bible, "ran, ngeel)/. '"mber of ayah which are ta0en from S"rah 'ooh for o"r boo0 are

__________.

(11 and 1, 1% and 1*, 1+ and 1/)!. '"mber of ayah ta0en from S"rah l mran2 __________.(1!3 and1!1, 1#3 and 1#1, 1$3 and 1$1)#. l45hawari6mi was the fo"nder of __________.(7icrobiology, nalytical lgebra, Physics)$. 8ogarithm was in&ented by __________.(l4 Ber"ni, l45hawari6mi, bn4e4 Sina)13. n 7"slim world the man was both a poet and a mathematician is

__________.

(9mer 5hyyam, l45hawari6mi, l4Ber"ni)11. 5itab"l 7ana6ir was written by __________.(:a;oob Bin sha;, bn4e4Sina, bn4al4aitham)1. Pin hole camera was in&ented by __________.(bn4al4aithan, l4<a6i, l4Ber"ni)1%. bn4e4 Sina was famo"s for his research in the -eld of __________.(7edicine, mathematics, physics)1*. 7"slim scientist who wrote abo"t 33 boo0s is __________.(bn4e4Sina, l4<a6i, 9mer 0hyyam)1+. 3th cent"ry is called the cent"ry of __________.(Physics, Chemistry, 7athematics)1/. =imension of acceleration is __________.(8T41, 8T4, 841T)1!. The signi-cant -g"res of 1/, ! are __________.(!, / and !, 1, / and !)1#. The a"thor of 5itab4"l47asoodi was __________.(l4Ber"ni, bn4e4Sina, bn4al4aitham)



1$. The a"thor of l4an"n4>il4Tib was __________.(l4Ber"ni, bn4e4Sina, bn4al4aitham)3. lsh4Shifa an encyclopedia of philosophy was written by __________.

(l4Ber"ni, bn4e4Sina, bn4al4aitham)1. tomic cloc0 is a (brie?y) radio transmitter gi&ing o"t short wa&es

of wa&elength abo"t __________.(%cm, %m, %@). The time inter&al occ"pied $1$/%1!!3 cycles of a speci-edenergy change in the Cesi"m atom is ta0en as e;"al to one __________.(second, min"te, ho"r)%. The ampere is the "nit of __________.(time, electric c"rrent)*. 7ole is the amo"nt of s"bstance of a system which contains asmany elementary entities as there are atom in 3.31 0g of __________.

(Cesi"m A 1%%, rani"m A $#, Carbon A 1)+. The dimension of &ol"me is __________.(8, 84, 8%)/. The dimension of &elocity is __________.(8T4, 8418, 8T41)!. The dimension of linear moment"m is __________.(78T41, 7841T, 7418T)#. The n"mber of /*3#. has __________ signi-cant -g"re(s).(one, fo"r, -&e)

$. The circ"mference of a circle of radi"s %.+ cm is __________.(1.$$cm, %#.*$ cm,1!$./ cm)%3. The &ol"me of a sphere of radi"s %.+ cm is __________.(1.$$ cm%, %#.*$cm%, 1!$./cm%)%1. l 5hawari6mi was the fo"nder of __________.(=ecimal system, eomtery, nalytical lgebra)%. n"mber, which is reasonably reliable, is called __________.(<atio, >"nction, Signi-cant >ig"re)%%. Dlectromagnetic wa&e theory of light is proposed by __________.(7aEwell, 'ewton, "ygen)%*. Fa&e mechanics were introd"ced by __________.(=e4Broglie, 7aEwell, 'ewton)%+. 'at"ral <adioacti&ity was disco&ered by __________.(7adam C"rie, Bac;"erel, 7aE4Plan0)

Chapter 4 Scalars and Gectors



1. Physical ;"antity, which can be completely speci-ed by itsmagnit"de only, is called __________.

(Scalars, Gectors, 'one of abo&e)

. Physical ;"antity, which can be completely speci-ed by its

magnit"de as well as direction, is called __________.

(Scalars, Gectors, 'one of bo&e)

%. Two or more than two scalars meas"red in the same system of "nitsare e;"al only if they ha&e the __________.

(Same 7agnit"de, Same magnit"de and direction, Same direction)

*. Gectors are denoted by __________.

(or a, b, c)

+. 7agnit"de of &ectors is denoted by __________.

(or a, b, c)

/. Two &ectors are e;"al witho"t any consideration of their initial point

only if they ha&e __________.

(Same magnit"de, Same magnit"de and similar direction, Samedirection)

!. The tail end of a &ector line is called __________.

(nitial point of the &ector, terminal point of the &ector, -nal point ofthe &ector)

#. The magnit"de of a &ector is always treated as __________.

('egati&e, 'on4'egati&e, 'egati&e and Positi&e both)

$. n parallelogram law of &ector addition the res"ltant of the &ector isrepresented by __________.



(=iagonal of the parallelogram, any adHacent side of the parallelogram,opposite side of the parallelogram)

13. 8aw of cosine is normally "sed to determine the __________.

(7agnit"de of res"ltant, direction of res"ltant, both magnit"de and

direction of the res"ltant)

11. The prod"ct of n"mber ImJ and &ectorgenerates a new &ector. Themagnit"de of the prod"ct is represented by __________.

(B K LmL, K LmLB, LmL K B)

1. 8aw of Sine is normally "sed for determination of __________.

(7agnit"de of res"ltant, =irection of <es"ltant, Both 7agnit"de and=irection)

1%. mK m is go&erned by __________.

(comm"tati&e law for m"ltiplication, ssociati&e law for m"ltiplication,=istrib"ti&e law for m"ltiplication)

1*. mK (mn)is go&erned by __________.

(Comm"tati&e law for m"ltiplication, ssociati&e law for m"ltiplication,=istrib"ti&e law for m"ltiplication)

1+. (m M n) K m K n follows __________.

(Comm"tati&e law, ssociati&e 8aw, =istrib"ti&e 8aw)

1/. The di&ision of a &ector by a positi&e n"mber n is gi&en byK LmLwhere m K 1Nn the direction of is __________.

(same as , oppoosite to , parallel to itself)

1!. The di&ision of &ector by a negati&e n"mber n is gi&en by K LmLwhere m K 1Nn the direction theis __________.(same as , oppoosite to , parallel to itself)



1#. "nit &ector is represented by __________.(,,)1$. The "nit &ectors are __________.

(parallel to each other, perpendic"lar to each other, none of the abo&e)

3. The s"m of rectang"lar components &ector prod"ces the original

&ector, which is represented by __________.

1. The magnit"de of &ectoris gi&en by __________., , )

. The dot prod"ct of "nit &ectors and is e;"al to __________.(i, , )

%. The dot prod"ct of "nit &ectors and is e;"al to __________.

*. The cross prod"ct of "nit &ector and is e;"al to __________(3, 1, )

+. The &ector prod"ct of and is ___________.(4,, r)

/. &ector which can be displaced parallel to it self and applied atany point is 0nown as __________.('"ll &ector, >ree Gector, Position Gector)

!. &ector, which can represent the position of a point with respect tosome -Eed point in coordinate system, is called __________.

('"ll Gector, >ree Gector, Position Gector)

#. f two &ectors which are e;"al in magnit"de b"t opposite indirection, their combination prod"ces __________.('"ll Gector, >ree Gector, Position Gector)

$. The hori6ontal component of &ector is gi&en by __________.( cos ;, sin ;, tan ;)

%3. The &ertical component of &ector is gi&en by __________.(cos;, sin;, tan)

%1. The prod"ct of magnit"de of two &ectors and cosine of the anglebetween them is called __________.(Scalar Prod"ct, Gector Prod"ct,'one of the abo&e)

%. The prod"ct of magnit"de of two &ectors and sine of the angle



between them is called __________.(Scalar Prod"ct, Gector Prod"ct, 'one of the abo&e)

%%. fandare the two &ectors then __________.

%*. Two or more &ectors are added by __________.

(ead to tail r"le, simple addition, none of these)

%+. The angle between the hori6ontal and &ertical component of a&ector is __________.($3@, 3@, 1#3@)

%/. f the res"ltant of two forces of magnit"de %' and *' is +' thenthe angle between these two forces is __________.(3@, *+@, $3@)

%!. The dot prod"ct of two &ectors is 6ero when they are __________.(n the same =irection, Perpendic"lar to each other, n the oppositedirection)

%#. f the cross prod"ct of two &ectors is 6ero they are __________.(Parallel to each other, Perpendic"lar to each other, 9pposite indirection)

%$. fare __________.(Parallel to Dach other, either or B is a n"ll &ector, perpendic"lar toeach other)

*3. The cross prod"ct of two &ector is a __________.(Scalar, Gector, 'one of these)

Chapter % 4 7otion

1. The change of position of a body in a partic"lar direction is called its __________.(=isplacement, Gelocity, cceleration)

. The change of displacement with respect to the time is called __________.



(Speed, Gelocity, cceleration)

%. The rate of change of position in a partic"lar direction is called __________.=isplacement, Gelocity, cceleration)

*. The total change in displacement di&ided by the total change in timeof body is called its __________.(&erage Gelocity, nstantane"o"s Gelocity, niform Gelocity)

+. The change of displacement in a &ery small inter&al of time (timetends to 6ero) of a body is called its __________.(&erage Gelocity, nstantaneo"s Gelocity, niform Gelocity)

/. Fhen a body "ndergoes an acceleration then __________.

(ts speed increases, ts &elocity increases, t falls toward the earth)

!. force acts on a body that is free to mo&e. Fe 0nown thatmagnit"de and direction of the force and the mass of the body.'ewton2s second law of motion enables "s to determine the body2s

__________.(cceleration, Speed, Gelocity)

#. hole is drilled thro"gh the earth along the diameter and a stone

dropped into it. Fhen the stone is at the centre of the earth it has __________.(7ass, Feight, cceleration)

$. force of %' acts perpendic"larly to a force of *'. Their res"ltanthas magnit"de of __________.(1', +', !')

13. n __________ of the following eEamples the motion of the car notaccelerated.(Car t"rns a corner at constant speed of $0mNhr, Car climbs a steephill with its speed dropping from /3 0mNhr at the bottom to 1+ 0mNhr atthe top, Car climbs a steep hill at the constant speed of *30mNhr)

11. The algebraic sign of acceleration depends on __________.(The choice of direction, Fhether an obHect is speeding "p or slowingdown, The position of the obHect)



1. The acceleration d"e to gra&ity __________.(has the same &al"e e&ery where in space, has the same &al"e e&erywhere on the earth, &aries with the latit"de on the earth)

1%. Swimming is possible beca"se of __________ law of motion.

(>irst, Second, Third)

1*. &ehicle is mo&ing hori6ontally at %3mNs. t is then accelerated"niformly in the same direction at 3.+ mNs for %3 seconds. ts -nalspeed is __________.(1#3 mNs, *+.3 mNs, $3 mNs)

1+. n obHect falls freely from rest with an acceleration of 13mNs(approEimately). Then the distance tra&eled after 3./ second is

__________.(1.# m, 1#.3 m, %./ m)

1/. trolley of mass 1.30g tra&elling at %mNs, collides with secondtrolley which is stationary. 9n collision the two trolley Hoin together andcontin"e to tra&el in the original direction with a common speed of 1.3mNs. __________is the mass of second trolley.(3.%%0g, 3./!0g, .30g)

1!. steel ball is dropped in a &isco"s ?"id. t will __________.(mo&e down with "niform &elocity, remain stationary, fall with "niformacceleration of $.# mNs)

1#. trolley of mass 0g mo&es with constant acceleration on asmooth hori6ontal s"rface. ts speed changes from *mNs to 1/ mNsd"ring /.3 seconds. The trolley has an acceleration of __________mNs.(3.+ , 3.//, )

1$. ="ring a stop a car comes to rest from a speed of 13 mNs in +seconds. ss"ming a steady deceleration d"ring this time, it will tra&ela distance of __________.(m, 13m, +m)

3. ball is dropped from a tall b"ilding falls to the gro"nd. Ballreaches the gro"nd in %.3 seconds. __________ is the height of theb"ilding.



(1+m, %3m, *+m)

1. trolley of mass 0g is mo&ing at 1+mNs. t collides head on withanother trolley of mass 10g initially at rest. The -rst trolley stic0s withsecond one. __________ is the speed of both trolleys after collision.

(+mNs, !.+mNs, 13mNs)

. Fhen a tennis ball is allowed to fall freely in air toward the gro"nd.t is fo"nd that it ac;"ires a "niform &elocity. This is beca"se the

__________.

(Feight of the ball does not act beyond a certain speed, pthr"st ofthe displaced air s"pports the ball, >rictional force ca"sed by the airincreases with speed)

%. The force re;"ired to accelerate mass of 10g at 1.3 mNs is __________.(1', 13', 133')

*. f a stone falls from rest with a "niform acceleration of 13mNs(approEimately) then __________.(t falls e;"al distance in s"ccessi&e seconds, it falls 13.3 m d"ring the-rst second, its speed increases by 13 mNs each second)

+. The frictionless trolley is mo&ing hori6ontally at %3mNs. t is thenaccelerated "niformly in the same direction at 3.+ mNs for %3.3seconds. The -nal speed is __________.(1+ mNs, *+ mNs, !+ mNs)

/. person co&ers half of its Ho"rney at a speed of *3 mNs and theother half at +3 mNs. is a&erage speed d"ring the whole Ho"rney is

__________.(*+ mNs, */ mNs, *# mNs, **.1 mNs)

!. n obHect is thrown &ertically "pward with a &elocity of *3 mNs andret"rns after some time into the thrower2s hands with the same&elocity. &erage &elocity d"ring the whole mo&ement is __________.(*3mNs, /3mNs, #3 mNs, 3)

#. body starts from rest and mo&es with "niform acceleration of



13mNs in the -rst 13 seconds. ="ring the neEt 13 seconds it mo&eswith "niform &elocity attained. The total distance co&ered by it is

__________.(33m, 1333m, 1+33m, +33)

$. ball dropped from the top of a b"ilding while another ball B is

thrown hori6ontally at the same time. The ball stri0es the gro"nd is __________.(Ball , Ball B, Both stri0es sim"ltaneo"sly)

%3. __________ of the following is one dimensional motion.(The wheels of a mo&ing train, the earth re&ol&ing ro"nd the s"n, train r"nning on a straight trac0)

%1. body has an initial &elocity of # mNs. fter mo&ing *m its &elocity

is 1 mNs. The acceleration is __________mNs.(13, 133, *)

%. body starting from rest tra&els 13 m in #th second. ss"ring themotion to be "niform, its acceleration is __________mNs.(1+, 1/, 13)

%%. body thrown &ertically "p with a &elocity of 13mNs, comes bac0 into the hand of the thrower after * seconds. eight attained by the body

is __________. (Ta0e g K 13mNs)(13m, +m, 1+m)

%*. The total change in &elocity of a body di&ided by the total time iscalled __________.(&erage acceleration, nstaneo"s cceleration, niform ccelration)

%+. The change in &elocity of a body in a &ery small inter&al of time(time inter&al tends to 6ero) is called __________.(&erage acceleration, nstantaneo"s cceleration, niformcceleration)

%/. Fhen there is e;"al change in &elocity in e;"al inter&als of time,then acceleration is called __________.(&erage cceleration, nstantaneo"s cceleration, niformcceleration)



%!. >orce is that agent which prod"ces or tends to prod"ce the __________.(Speed in the body, cceleration in the body, Constant &elocity in thebody)

%#. Fhene&er a constant force is applied on a body then it will mo&e

with __________.(Cosntant Speed, Constant Gelocity, Constant cceleration)

%$. The direction of tension in string will always in the __________.(Same direction of applied force, 9pposite direction of applied force,'one of the abo&e)

*3. body of mass 130g is s"spended by a string, the tensionprod"ced in the string is __________. (Ta0e g K 13mNs)

(133', $.# ', $#3 ')

*1. n elastic collision between the two bodies __________.(9nly momet"m of the system is conser&ed, 9nly the 0inetic Dnergy ofthe system is conser&ed, Both the 0inetic Dnergy and 7oment"m ofthe system remain the same)

*. n inelastic collision between the two bodies __________.(9nly momet"m of the system is conser&ed, 9nly the 0inetic Dnergy of

the system is conser&ed, Both the 0inetic Dnergy and 7oment"m ofthe system remain the same)

*%. f a lighter body collides elastically with a massi&e body at rest thenthe lighter bodies will __________.(<ebo"nd, Come to rest, Start to mo&e with a &elocity do"ble of itsinitial)

**. The 0inetic friction will always be __________.(reater than the static friction, D;"al to the Static >riction, 8ess thanthe static >riction)

*+. The "nit of coeOcient of friction in S system is __________.('ewton, =yne, 'one of These ('o nit))

*/. ="e to the rise in temperat"re the coeOcient of ?"id friction will __________.



(=ecrease, ncrease, <emain the same)

*!. body of mass m2 slides down a frictionless inclined plane ma0ingan angle ; with the hori6ontal then __________ of the followingstatement is most appropriate.(The component of its weight normal to the plane p"lls it down the

plane, The component of its weight parallel to the plane is balanced bythe normal reaction of the plane, The body mo&es down the plane witha constant acceleration)

*#. f a weight of 1 0g and 1gm are dropped from the same heightsim"ltaneo"sly then __________.(10g will reach the gro"nd earlier, 1gm weight will rach the gro"ndearlier, bother will reach the gro"nd at the same time)

*$. f the &elocity of the body is "niform then __________.(ts speed remains "niform, ts speed and direction of motion willremain the same, ts acceleration is "niform)

+3. f a particle is mo&ing with constant speed in a circle then its&elocity is __________.(ero, niform, Gariable)

Chapter * 4 7otion in Two =imensions

1. The motion of a body along a straight line is called __________.(8inear 7otion, ng"lar 7otion, Gibratory 7otion)

. The motion of a body along a c"r&ed path is called __________.(8inear 7otion, ng"lar 7otion, Gibratory 7otion)

%. The eEample of motion of the body in two dimensions is __________.

(Ball mo&ing along a straight line, Progectile, Train mo&ing along astraight trac0)

*. n proHectile motion the obHect is p"rely "nder the in?"ence of __________.(Centripetal >orce, >orce of ra&ity, <estoring >orce)



+. n proHectile motion (freely falling bodies) sign assigned to theacceleration d"e to gra&ity (g) will always be __________.(Positi&e, 'egati&e, 'one of these)

/. n considering the proHectile motion all the &ectors li0e, &elocity anddisplacement along positi&e y4aEis will be ta0en as __________.

(Positi&e, 'egati&e, 'one of these)

!. ="ring the proHectile motion, the &ertical component of a &elocity __________.(Changes, remains the same, 'one of these)

#. ="ring the proHectile motion, the hori6ontal component of the&elocity __________.

(ncreases, <emains the same, =ecreases)

$. The path of the proHectile is __________.(Parabolic, yperbolic, Dlliptical)

13. ="ring the proHectile motion the acceleration along the hori6ontaldirection will __________.

(=ecrease, ncrease, be ero)

11. n proHectile the acceleration along &ertical direction will __________.(=ecrease, ncrease, <emain the same)

1. The eEpression for the time to reach the maEim"m height of theproHectile is __________.

(Gosin;Ng, Gosin;Ng, Gosin;Ng)

1%. The eEpression for the total time of ?ight of the proHectile is __________.(Gosin;Ng, Gosin;Ng, Gosin;Ng)

1*. The eEpression for maEim"m height reached by the proHectile is __________.



(Gosin;Ng, Gosin;Ng, Gosin;Ng)

1+. The eEpression for the hori6ontal range of the proHectile is __________.(Gosin;Ng, Gosin;Ng, Gosin;Ng

1/. The eEpression for the maEim"m range of the proHectile is __________.(GoNg, Gosin;Ng, Gosin;Ng)

1!. >or the maEim"m range of the proHectile the angle of ele&ationm"st be __________.(3@, *+@, $3@)

1#. The hori6ontal range of the proHectile is directly proportional to the __________.(nitial Gelocity, S;"are of the initial &elocity, S;"are root of the initial&elocity)

1$. The hori6ontal range of the proHectile is directly proportional to the __________.(sine of the angle of ele&ation, sine of the twice of the angle of

ele&ation, s;"are of the sine of the angle of ele&ation)

3. The eEpression for the traHectory of the proHectile is __________.(aE A Q bE, aNE A bEN, aE A bE)

1. n proHectile motion the small angle of ele&ation prod"ces __________.(>lat TraHectory, igh TraHectory, 8ow traHectory)

. n proHectile motion the large angle of ele&ation prod"ces __________.(>lat traHectory, 8ow TraHectory, igh traHectory)

%. f the angle of ele&ation of the proHectile is $3@ then its hori6ontalrange will be __________.



(7inim"m, ero, 7aEim"m)

*. >or the proHectile with high traHectory their time of ?ight will be __________.(Short, 8ong, 'one of these)

+. >or the proHectile with low traHectory, their time of ?ight will be __________.(Short, 8ong, 'one of these)

/. f a proHectile has some hori6ontal range at an angle of ele&ation of1+@ then its range will be the same when the angle of ele&ation ise;"al to __________.(%3@, *+@, !+@)

!. t maEim"m height, the &ertical component of the &elocity of theproHectile is __________.(7inim"m, ero, 7aEim"m)

#. ori6ontal motion with constant &elocity and &ertical motion withconstant acceleration is called __________.(<ectilinear 7otion, ProHectile 7otion, Circ"lar 7otion)

$. ball is thrown hori6ontally from a height of *33m with a m"66le&elocity of 133mNs. t eEperiences a hori6ontal acceleration e;"al to

__________.(+3mNs, $.# mNs, 6ero)

%3. f a shell is -red with the &elocity of $.# mNs at an angle of *+@ thenits hori6ontal range will be __________.

(ero, *.$m, $.#m)

%1. proHectile is -red hori6ontally with an initial &elocity of 3mNs.after % seconds its hori6ontal component of &elocity is __________.(/3mNs, /./!,3 mNs)



%. n proHectile motion __________ of the following angle will res"lt themaEim"m range.(3@, *+@, /3@)

%%. n aeroplane mo&ing hori6ontally with a &elocity of 133mNs, dropsa food pac0et while ?ying at a height of *$3m. The pac0et will stri0e

the gro"nd from the point H"st &ertically below the point of theproHection at a distance of __________.($#3m, 1333, 1$/3 m)

%*. The ball is dropped from the top of a b"ilding sim"ltaneo"sly theball B is thrown hori6ontally then __________.(ball stri0es the gro"nd -rst, ball B stri0es the gro"nd -rst, both ball and B will stri0e the gro"nd sim"ltaneo"sly)

%+. f the la"nch angle of a loc"st is ++@ and its range is 3.# m then theta0e oR speed of a loc"st is __________.( mNs, .$ mNs, %.$ mNs)import NeEtensionsNoogledSenseNoogledSense.cssU

%/. __________ sho"ld be the initial &elocity of a roc0et if it to hit atarget 1333 0m away.(%1%3.+ mNs, %1%.+ mNs, %1.%+ mNs)

%!. f an obHect is mo&ing with constant speed along a circle then itsmotion is __________.(8inear, Gibratory, niform Circ"lar)

%#. The eEpression for the time period of an obHect mo&ing withconstant speed & along a circle of radi"s r is gi&en by __________.(*prN&, prN&, prN&)

%$. The angle s"btended by an obHect with the centre of the circlewhen its is mo&ing from one point to another on its circ"mference iscalled __________.(ng"lar =isplacement, ng"lar Speed, ng"lar cceleration)



*3. The "nit of ang"lar displacement in system of meas"rement is __________.(<adian, mNs, radNs)

*1. The central angle s"btended by an arc whose length is e;"al to theradi"s of the circle is e;"al to one __________.

(<adian, =egree, radient)

*. The relation linear (s) and ang"lar (;) displacements is gi&en by __________.(s K r;, s K rN;, ; K sr)

*%. n the relation s K r;, ; will always be meas"red in __________.(=egrees, <adian, 'one of these)

**. 9ne radian is e;"al to __________.(+.!% degrees, +!.% degrees, +%.! degree)*+. 9ne degree is e;"al to __________.(3.31! rad, 1!.*+ rad, 1.!* rad)*/. The ang"lar displacement or shift per "nit time is called __________.(ng"lar Speed, ng"lar Gelocity, ng"lar cceleration)

*!. 9ne re&ol"tion is e;"al to __________.

(p rad, pN rad, *p rad)

*#. 1 radial is e;"al to __________.(pre&ol"tion, pN rad, p1N re&ol"tion)

*$. The direction of ang"lar &elocity is always along the aEis of rotationand it can be determined by __________.(ead to tail r"le, <ight hand r"le, 'one of these)

+3. f an obHect is rotating in the co"nter4cloc0wise direction then thedirection then the direction of ang"lar &elocity is __________.(nto the plane, 9"t of the plane, 'one of these)

+1. f a particle with instantaneo"s linear &elocity &2 is rotating alongthe circ"mference of circle of radi"s r2 then the relation between



ang"lar &elocity (w) and its linear &elocity (&) is gi&en by __________.(& K wNr, & K rw, w K &r)

+. f a particle co&ers e;"al ang"lar displacement in e;"al inter&al oftime then its ang"lar &elocity is __________.(Gariable, niform, &erage)

+%. The rate of change of ang"lar &elocity is called __________.(ng"lar =isplacement, ng"lar cceleration, 'one of these)

+*. The "nit of ang"lar acceleration in S system is __________.(degNs, mNs, radNs)

++. The relation between linear acceleration (a) and ang"laracceleration (a) of a particle is gi&en by __________.(a K ra, a K aNr, a K ar)+/. The &elocity of the particle tangent to its circ"lar path is called

__________.(ng"lar Gelocity, niform ng"lar Gelocity, Tangential Gelocity)

+!. n circ"lar motion the time period and ang"lar &elocity of a particle

are __________.(=irectly proportional to each other, n&ersely proportional to each,none of these)+#. f a particle is mo&ing with constant speed along the circ"mferenceof a circle then the acceleration possessed by the particle is __________.

(8inear cceleration, Centripetal cceleration, 'one of these)

+$. The direction of centripetal acceleration will always be __________.(Towards the centre of the circle, ways from the centre of the circle)

/3. The force, which prod"ces the centripetal acceleration, is called __________.(Centrif"gal >orce, ra&itational >orce, Centripetal >orce)



/1. The eEpression for centripetal acceleration is gi&en as __________.(&Nr, &Nr, rw)

/. The eEpression for centripetal acceleration in terms of time period(T) is gi&en as __________.(*prNT, *prNT, *prNT)

/%. The force, which 0eeps the body in circ"lar motion and alwaysdirected towards the centre of the circle is called __________.(>orce of ra&ity, Centripetal >orce, Centrif"gal >orce)

/*. The acceleration of the body or particle tangent to the circ"lar pathis called __________.(Centripetal cceleration, Tangential cceleration, 'one of these)

/+. n circ"lar motion the tangential component of acceleration ariseswhen __________.(speed of the obHect is changed, speed of obHect is constant, directionof motion of the obHect is changed)

//. n circ"lar motion the centripetal component of acceleration ariseswhen __________.

(speed of the obHect is changed, speed of the obHect is constant,direction of motion of obHect is changed)/!. Centripetal acceleration and tangential acceleration are always

__________.(Parallel to Dach other, Perpendic"lar to each other, 'one of thse)

/#. car is tra&elling at a constant speed of 3mNs ro"nds a c"r&e ofradi"s 133m. Fhat is its acceleration.

(mNs, %mNs, *mNs)

/$. f the speed of the obHect mo&ing in a circle is do"bled thencentripetal force __________.(<emains the same, Becomes half of its initial &al"e, Becomes fromtimes than its initial &al"e)



!3. Fhen an obHect mo&es ro"nd the circ"lar trac0, the centripetalforce is pro&ided by __________.(>orce of ra&ity, >ictio"s >orce, >rictional >orce)

Chapter +

Tor;"e, ng"lar 7oment"m and D;"ilibri"m1. Tro;"e is de-ned as __________.

(Time rate of change of ang"lar moment"m, Time rate of change of

linear moment"m, time rate of change of ang"lar &elocity)

. The &ector ;"antity tor;"e __________.

(=epends on the choice of origin, does not depend on the choice of

origin)

%. D&ery point of rotating rigid body has __________.

(the same ang"lar &elocity, the same linear &elocity, the same linear

acceleration)

*. The right hand r"le is applied to -nd __________.

(The direction, of a &ector obtained by the &ector prod"ct of two

&ectors, The magnit"de of a &ector obtained in the abo&e manner,

neither the direction nor the magnit"de)

+. Two forces, which form a co"ple __________.

(can be replaced by a single e;"i&alent force, cannot be replaced by a

single e;"i&alent force, are perpendic"lar to each other)

/. The direction of tor;"e is __________.

(The same as the direction of the corresponding applied force, opposite

to the direction of the applied force, perpendic"lar to the direction of

applied force)!. The centre of mass of system of particles __________.

(coincides always with centre of gra&ity, ne&er coincides always with

the centre of gra&ity, coincides with the centre of gra&ity only in a

"niform gra&itational -eld)

#. The moment of moment"m is called __________.

(Co"ple, Tor;"e, ng"lar 7oment"m)



$. =imensions of moment of inertia are __________.

(718@T41, 718@T41, 718T@)

13. The "nit of moment of inertia is S system is __________.

(0gNm, 0g4m, 0g4m)

11. <adi"s of a ring is cm and its mass is 3g. ts 7. abo"t an aEis

passing thro"gh its centre and perpendic"lar to its plane is __________.

(13g A cm, #3g A cm, 3g 4 cm, *3g A cm)

1. f the distance of a particle from the aEis of rotation is do"bled, the

moment of inertia __________.

(Becomes half, ncreases two times, increases fo"r times, increases

eight times)

1%. The physical ;"antity, which prod"ces ang"lar acceleration, is

called __________.

(Centripetal >orce, Tro;"e, ng"lar Gelocity)

1*. Tor;"e of a force T K is a &ector ;"antity. ts direction is

determined by __________.

(<ight hand r"le, 5nowing the direction of >, 5nowing the position of

origin)

1+. n rotational motion, the analog of force is __________.(rotational inertia, moment of inertia, tor;"e)

1/. The term tor;"e is synonymo"s with __________.

(7oment of force, 7oment of inertia, ng"lar 7oment"m)

1!. The prod"ct of force times the perpendic"lar distance between

some point and the line of action of the force is __________.

(the moment of inertia acting on the body, The moment of force abo"t

the chosen point, The ang"lar moment"m of the body)1#. The magnit"de of tor;"e is e;"al to the prod"ct of the force and

the moment arm. The moment arm is __________.

(The distance between the point (point chosen), and the pointof action

of the force, the maEim"m distance between the point and the line of

action of the force, The minim"m (perpendic"lar) distance between the

pi&ot and the line of action of the force)



1$. f the direction of the applied force is re&ersed then __________.

(ts tor;"e remains "nchanged, the magnit"de of its tor;"e changes

and direction of the tor;"e remains the same, The magnit"de of its

tor;"e remains the same b"t the direction of the tor;"e re&erses)

3. f the directions of are re&ersed then __________.

(The magnit"de and direction of the tor;"e remain "naltered, the

magnit"de of the tor;"e changes b"t direction remains "nchanged, the

magnit"de of the tor;"e does not change b"t direction re&erses)

1. co"ple consists of __________.

(Two e;"al and opposite forces acting at a point on a body, two e;"al

and parallel forces acting at a point on a body, two e;"al and

antiparallel forces acting at two diRerent points on a body)

. The arm co"ple is __________.

(The smallest distance between two e;"al and antiparallel forces, The

greates distance between two e;"al and antiparallel forces, The lines

of action of two e;"al and opposite forces)

%. The "nits of tor;"e and co"ples are __________.

('4m and '4m respecti&ely, '4m and '4m respecti&es, '4m for both)

*. pair of forces e;"al in magnit"de and opposite in direction withnon4coincident lines of action is 0nown as __________.

( co"ple, 7oment of >orce, '"ll Gector)

+. The centre of gra&ity of an obHect is __________.

(The foce of gra&ity on the obHect, The point abo"t which the obHect

rotates, The point at which the total weight of the obHects acts)

import NeEtensionsNoogledSenseNoogledSense.cssU

/. The centre of gra&ity of a body a irreg"lar shape lies __________.

(t its centre, t the s"rface of the body, t the intersection of

medians)

!. ="ring rotational motion, the mass of a body or system is

considered to be concentrated at a single distance from the aEis

(centre) of rotation. The distance is called __________.



(The radi"s of yration, The centre of mass, The moment of inertia)

#. force passing thro"gh the centre of gra&ity of a body __________.

(<es"lts only in rotational motion, <es"lts only in translational motion,

holds the body in e;"ilibri"m)

$. n rotational motion, the analog of linear moment"m is called

ang"lar moment"m . They are connected by relation __________.

()

%3. n rotational motion, the ;"antity, which plays the same role as the

inertial mass in rectilinear motion, is called __________.

(nertia, ng"lar 7oment"m, 7oment of nertia)

%1. The symbol that is "sed to represent rotational inertia or moment

of inertia is __________.

(F, l, <)

%. The ang"lar moment"m (8) can be eEpressed in terms of moment

of inertia (l) and ang"lar &elocity (w) as __________.

(8 K lw, 8 K l w, 8 K lNw)

%%. The prod"ct of the rotational inertia abo"t an aEis and the ang"lar

&elocity of a body rotating abo"t this aEis is called __________.

(7oment of nertia, Tor;"e, ng"lar 7oment"m)%*. The moment of inertia or rotational inertial depends "pon

__________.

(7ass =istrib"tion of the body abo"t the aEis of rotation, 7ass of the

body and its radi"s, 7ass of the body and its ang"lar speed)

%+. The time rate of change of ang"lar moment"m of a body is e;"al

to __________.

(The applied force, The applied tor;"e, The moment of inertia)%/. f no eEternal tor;"es act, the ang"lar moment"m of a body

rotating abo"t a -Eed aEis in two dimension is __________.

(Gariable, Constant, 'ot conser&ed)

%!. The dimensions of ang"lar moment"m are __________.

(78T41, 78T4, 78T41)

%#. The S of ang"lar moment"m is __________.



(0gmsec41, 0gmsec4, 0gmsec41)

%$. The t"rning eRect of a force is called __________.

(cceleration, Tor;"e, Gelocity)

*3. f ; is the angle between force and displacement &ectors then the

physical ;"antity tor;"e is mathematical eEpressed as __________.

(C K r>sin;, C K >rcos;, C K >rtan;)

*1. The perpendic"lar distance from the aEis of rotation of a body to

the line of action of a force is called __________.

(7oment rm, Tor;"e, =isplacement)

*. f the moment arm of a force is 6ero, i.e. the line of action of a force

is passing thro"gh the pi&ot then the magnit"de of the tor;"e

generated as s"ch is __________.

(ero, Cloc0wise, nticloc0wise)

*%. The tor;"e depends "pon __________.

(7agnit"de of force, 7agnit"de of =isplacement, 7agnit"de of >orce

and =isplacement)

**. The magnit"de of tor;"e will be 6ero if the angle between force

and displacement is __________.

(3@, *+@, /3@)*+. The -rst condition "s is s"Ocient to establish the mechanical

e;"ilibri"m if __________.

(The body is spherically symmetric, The body is not deformable, The

body may be considered as mass point)

*/. n eEtended body in e;"ilibri"m many be analy6ed as if it is a

particle pro&ided that __________.

(ll the forces are conc"rrent, The lines of action of all forces meet in acommon point, any of the abo&e)

*!. The condition for e;"ilibri"m of a particle is that the __________.

(Gector s"m of all forces be 6ero, cceleration be constant, Gector s"m

of the forces and tor;"es be 6ero)

*#. The particle mo&ing with constant &elocity may be __________.

(Changing in direction, cceleration, n e;"ilibri"m)



*$. Consider a body s"spended from a ceiling by a single &ertical cord.

The weight of the body is a force eEerted by __________.

(By the body on the ceiling, By the body on the cord, By the earth on

the body)

+3. t is easier to t"rn a steering wheel with both hands than with a

single hand beca"se __________.

( co"ple acts on the wheel, Two e;"al and opposite forces act on the

wheel, The wheel is more strongly gripped)

Chapter / 4 ra&itation

1. The acceleration d"e to gra&ity __________.(as the same &al"e e&ery where in space, has the same &al"e e&ery

where on the earth, Garies with latit"de on the earth)

. f a planet eEisted whose mass and radi"s were both twice that of

the earth, then acceleration d"e to gra&ity at its s"rface wo"ld be

__________.

(*.$ mNs, 1$./ mNs, .*+ mNs)

%. Fhen the space ship is at a distance e;"al to twice of the earth2s

radi"s from its centre then the gra&itational acceleration is __________.

(*.$ mNs, 1$./ mNs, .*+ mNs)

*. hole is drilled thro"gh the earth along the diameter and a stone is

dropped into it. Fhen the stone is at the centre of the earth it has

__________.

(7ass, Feight, cceleration)

+. 'ewton2s law of "ni&ersal gra&itation __________.

(Can only be indirectly inferred from the beha&io"r of the planent, Can

be directly &eri-ed in the larboratory, is &alid only with in the solar

system)

/. The gra&itational force between two bodies does not depend "pon

__________.



(Their separation, Prod"ct of their masses, The s"m of their masses)

!. f the radi"s of the earth were to shrin0 by 1V while its mass

remaining same, the acceleration d"e to gra&ity on the earth s"rface

wo"ld __________.

(=ecrease, <emain the same, ncrease)

#. Planets re&ol&e ro"nd the s"n d"e to __________.

(7"t"al attraction and rep"lsion between the s"n and the planets,

ra&itational attraction between the s"n and the planets, Centripetal

>orce)

$. >orce of m"t"al attraction of earth on the obHects is called

__________.

(Feight, 7ass, ra&itation)

13. Fhen a person goes down to the bottom of deep mine compared to

his weight on the s"rface then its weight will __________.

(remain same, ncrease, =ecrease)

11. The weight of an obHect at the pole is greater than at e;"ator. This

is beca"se __________.

(ra&itational p"ll is more at the poles, the shape of the earth, the

attraction of the moon is maEim"m at the earth2s s"rface)1. 9n the s"rface of the moon the weight of a person __________.

(ncreases, =ecreases, <emains the same)

1%. spring balance is being "sed to weigh mass of 10g in a lift. f the

spring balance reads $' and the acceleration of free fall (g) K 13mNs.

The lift is __________.

(scending at 1mNs, t rest, =escending at 1mNs)

1*. The acceleration of free fall on moon is abo"t one siEth of its &al"eon earth. f on the earth a body has mass m2 and weight w2, then on

the moon, mass and weight will be respecti&ely abo"t __________.

(mN/ and wN/, mN/ and w, m and wN/)

1+. Spring balance is "sed to meas"re __________.

(7ass of the obHect, pparent weight of the obHect, 'one of the abo&e)

1/. person whose weight is 13 po"nd on the earth, on the moon his



weight will be approEimately __________.

(3 po"nd, %3 po"nd, *3 po"nd)

1!. ccording to the law of gra&itation the force of attraction between

the two bodies is directly proportional to the __________.

(S"m of the masses of the bodies, Prod"ct of their masses, =iRerence

of their masses)

1#. ccording to the 'ewton2s law of gra&itation the force of attraction

between the two bodies is in&ersely proportional to the __________.

(distance between the two bodies, S;"are of the distance between the

two bodies, none of the abo&e)

1$. The gra&itational force between two bodies whose mass are m1

and m are placed at a distance r from each other is __________.

(,, )

3. f the distance between two masses is do"bled, the gra&itational

force between them becomes __________.

(half of its original &al"e, one fo"rth of its original &al"e, fo"r times of

its original &al"e)

1. The &al"e of gra&itational constant is __________.

(/./!% E 13411 '4m N0g, !./!% E 13411 '4m N0g, #./!% E 13411 '4m N0g)

. The dimensions of gra&itational constant are __________.

(8%741T4, 87T41, 874T4)


%. The approEimate &al"e of the a&erage density of the earth is

__________.(+.+ E 13% 0g Nm%, /.+ E 13% 0g Nm%, !.+ E 13% 0g Nm%)

*. The &al"e of g &aries with radi"s of Darth as it is __________.

(n&ersely proportional to the radi"s of the earth, n&ersely proportional

to the s;"are of the radi"s of the earth, =irectly proportional to the

s;"are of the radi"s of the earth)

+. cceleration of the moon is abo"t __________.



(.! E 134% mNs, .! E 13% mNs, 'one of these)

/. The &al"e of orbit radi"s of the moon is abo"t __________.

(%.#* E 13# m, %.#* E 13+ m, %.#* E 13% m)

!. The time ta0en by the moon to complete one re&ol"tion aro"nd the

earth is __________.

(.%/ E 13/ seconds, .%/ E 13* seconds, .%/ E 13# seconds)

#. The gra&itational force of attraction between two balls each of

mass 1330g when they are placed at a distance of 1m apart is

__________.

(/./!% E 134# ', /./!% E 13411 ', /./!% E 134! ')

$. The acceleration d"e to gra&ity decreases for a point abo&e the

s"rface of the earth and for the same point below the s"rface of the

earth with a __________.

(>aster rate, Slow rate, Same rate)

%3. The &al"e of the gra&itational acceleration at a distance e;"al to

the earth2s radi"s abo&e the earth2s s"rface is __________.

($.# mNs, *.$ mNs, .*+ mNs)

%1. The &al"e of the distance from the centre of the earth when the

gra&itational acceleration has one half the &al"e it has on the earth2ss"rface __________.

(1.*1* <e, <e, 3.+<e)

%. person with a mass of *30g is standing on a scale in an ele&ator.

The ele&ator mo&es "pwards with a constant acceleration of 1. mNs,

then the weight of the person as meas"red by him in the ele&ator is

__________.

(%*3 ', **3', +*3')%%. The s"n eEerts a force of attraction on the planets th"s 0eeping

them in their __________.

(<adii, 9rbits, State of motion)

%*. '"merical &al"e of the gra&itational acceleration can also be

estimated by 0nowing the __________.

(&erage =ensity of the Darth, Circ"lar 7otion, 7ass of the earth)



%+. spring balance s"spended from the ceiling of an ele&ator

s"pports an obHect. The magnit"de and direction of acceleration, which

wo"ld ma0e the balance reading 6ero, is __________.

($.# mNs downward, $.# mNs "pward, none of these)

%/. The earth tra&erses its circ"lar orbit in %.1+ E 13! seconds, orbiting

at an orbital &elocity of .$ E 13* mNs, then its orbit radi"s is

__________.

(1.*+ E 1311 m, 1.*+ E 13# m, 1.*+ E 13/ m)

%!. The arti-cial gra&ity is prod"ced in a satellite to o&ercome the state

of weightlessness eEperienced by the astrona"t by __________.

(Spinning it aro"nd its own aEis, ncreasing the orbital speed of it,

=ecreasing its orbital speed)

%#. The eEpression for the fre;"ency of rotation of the satellite to

prod"ce arti-cial gra&ity is __________.

(1Np WgN<, p WgN<, 1Np W<Ng)

%$. f the mass of the earth becomes fo"r times to its initial &al"e then

the &al"e of g will be __________.

(D;"al to its initial &al"e, >o"r times to its initial &al"e, 9ne fo"rth of its

initial &al"e)*3. The &al"e of gra&itation acceleration (g) on the s"rface of the

planet of radi"s 13+ m and mass 130g is __________.

(/./! E 134# mNs, /./! E 13411 mNs, /./! E 13413 mNs)

*1. The acceleration d"e to gra&ity on the s"rface of the moon is abo"t

_________.

(9ne siEth the acceleration d"e to gra&ity on the s"rface of the Darth,

9ne fo"rth the acceleration d"e to gra&ity on the s"rface of the earth,do"ble the acceleration d"e to gra&ity on the s"rface of the earth)

*. The mass of a planet and its diameter are three times those of

Darth2s. Then the acceleration d"e to gra&ity on the s"rface of the

planet will be _________.

(9ne third on the Darth2s, half on the Darth2s, 'one of the abo&e)

*%. cceleration d"e to gra&ity at the centre of the earth is _________.



(ero, 7aEim"m, 'one of these)

**. The e;"ation, which gi&es the magnit"de of centripetal

acceleration of the moon, is _________.

(*p<NT, *p<NT, *p<NT)

1. The dot prod"ct of force and displacement is __________.

(For0, Dnergy, Power)

. Fhen the force and displacement are parallel to each other, then

wor0 is __________.

(7inim"m, 7aEim"m, 'one of These)

%. Fhen the force and displacement are perpendic"lar to each other,

then wor0 is __________.(7inim"m, 7aEim"m, 'one of these)

*. Fhen the force and displacement are in the opposite direction then

the wor0 is __________.

(Positi&e, 'egati&em, ero)

+. The cross prod"ct of force and moment arm is __________.

(For0, Power, 'one of these)

/. For0 is certainly done, if a body __________.

(ses some energy, Co&ers some distance, Co&ers some displacement)

!. 9ne electron &olt is e;"al to __________.

(1./ E 1341$X, 1./ E 1341#X, 1./ E 131$X)

#. 9ne Ho"le is e;"al to __________.

(13%erg, 13!erg, 134%erg)

$. The dot prod"ct of force and &elocity is called __________.

(For0, Power, Dnergy)

13. Power is a __________.

(Scalar "antity, Gector "antity, 'one of these)

11. For0 done by a &ariable force is e;"al to __________.

(where =di is small, where =di is large, 'one of these)



1. man does the wor0 if he __________.

(oes to -fth ?oor of the b"ilding, oes to -fth ?oor of the b"ilding and

comes bac0 to gro"nd ?oor, remains on the gro"nd ?oor)

1%. 9ne horsepower is e;"al to __________.

(++3ft.lbNs, !*/ ft.lbNs, 'one of these)

1*. 8aw of conser&ation of energy is e;"i&alent to __________.

(8aw of conser&ation of mass, 8aw of conser&ation of moment"m,

'one of these)

1+. The eEpression for the absol"te potential energy of mass m at the

earth s"rface is gi&en as __________.

(mgh, m7eN<e, m7eN<e)

1/. For0 done on a body is e;"al to __________.

(P.t, PNt, >N)

1!. n a t"g of war, team is slowly gi&ing way to the team B, then

__________.

(Team is doing negati&e wor0, Team is doing positi&e wor0, team

is not doing wor0)

1#. 5inetic energy of an obHect __________.

(s independent of the direction of &elocity, =epends on the direction of &elocity, s a scalar ;"antity)

1$. For0 energy e;"ation is simply __________.

(8aw of conser&ation of mass, 8aw of conser&ation of energy, none of

these)

3. For0 done by a grass c"tter is maEim"m when he p"lls it

__________.

(7a0ing an angle *+@ with the ?oor, 7a0ing an angle of $3@ with the?oor, long a line parallel to the ?oor)

1. car co&ers some distance witho"t any acceleration in it, then

__________.

(Dngine did some positi&e wor0, Dngine did some negati&e wor0, none

of these)

. body lifts a bloc0 on to a table in time =t. The wor0 he did,



depends "pon __________.

(7ass of the bloc0, time, none of these)

%. The "nit of power is __________.

(watt4ho"r, Xo"le4second, '4mNs)


*. The rate of change of moment"m m"ltiplies by displacement gi&es

__________.

(Power, Press"re, For0)

+. ball d"ring its downward Ho"rney possesses __________.

(5inetic Dnergy only, Potential Dnergy only, Both 0inetic energy and

potential energy)

/. For0 done in the gra&itational -eld __________.

(s independent of the path followed, depends "pon the path followed,

none of these)

!. For0 done in the gra&itational -eld along a closed path is e;"al to

__________.

(ero, 7aEim"m, none of these)

#. Dinstein2s mass energy e;"ation is __________.(D K mc, D K mc, D K mc)

$. 1 0ilowatt ho"r is e;"al to __________.

(%./ E 13/X, /.% E 13/ X, 'one of these)

%3. The tidal energy is d"e to the __________.

(<otation of earth relati&e to moon, rotation of the earth aro"nd s"n,

none of these)

%1. The dimensions of wor0 are __________.(78T4, 78T4, 78T41)

%. The dimensions of energy are __________.

(78T4, 78T4, 78T41)

%%. The dimensions of power are __________.

(78T4, 78T4%, 78%T4)

%*. __________ of the following ;"antity is de-ned as rate eEpendit"re



of energy.

(7oment"m, Power, Gelocity)

%+. ra&itational potential energy transform into 0inetic energy if

__________.

(Fater e&aporates, train accelerates from rest along a hori6ontal

trac0, body falls from a table)

%/. __________ of the following represents the energy lost by a 1 '

weight in falling thro"gh 1 m.

(3.13 X, 1 X, 13 X)

%!. Fatt may be de-ned as __________.

(Xo"le per co"lomb, Xo"le per second, 'ewton meter)

%#. __________ of the following does not con&ert one type of energy into

another.

(Solar cell, Steam engine, Transformer)

%$. __________ of the following has the same "nit as that of potential

energy.

(cceleration, 7oment"m, For0)*3. DEperiment shows that the a&erage power of a man wal0ing

"pstairs at an ordinary pace is only abo"t __________.

(3. 0F, 3.%% 0F, 3.++ 0F)

*1. body whose mass is *3g -nds that he can r"n "p a ?ight of *+

steps each 1/ cm high in +. sec. is power is __________.

(3.** 0F, 3.+* 0F, 3./* 0F)

*. person ha&ing a mass of /30g eEerts a hori6ontal force of %33' inp"shing a $3 0g obHect thro"gh a distance of %m along a hori6ontal

?oor. The wor0 done by this person is __________.

(!333 Xo"les, $33 Xo"les, 1133 Xo"les)

*%. __________ is the 0inetic energy of /3 g b"llet mo&ing at a speed of

/33 mNs.

(13,#33X, 11,#33X, 1,#33X)



**. ball of mass 0g rolls from the top of a smooth slope which is ! m

high and 1* m long to its bottom. The change in the gra&itational

potential energy is approEimately __________.

(1%!X, 1%$X, 1*1X)

*+. man weighing /33 ' climbs +m &ertically "pward in # seconds

his rate of wor0ing is __________.

(1!+watt, !+watt, %!+watt)

Chapter # 4 Fa&e 7otion and So"nd

1. f 0 is a positi&e constant __________ of the following eEpression

represents simple harmonic motion (E is the displacement of particle

from mean position).(cceleration K 0E, acceleration K 40E, acceleration K 0E,

acceleration K 40E)

. f 0 and a are the positi&e constants and E is the displacement from

e;"ilibri"m position. __________ of the following eEpression represents

S..7.

(Gelocity K 0 (a4E), Gelocity K W0(a A E),Gelocity KW0(E A a),

Gelocity K 0(E4a))

%. bob of mass m is hanging from the end of an elastic spring and

eEec"ting S..7 with a period T. f this mass is replaced by another

bob of mass m, the new time period of this system will be

__________.

(T, T, WT, TN)

*. bob of mass m is hanging from the end of an inelastic string is

eEec"ting S..7 with a period T. f this bob is replaced by an other

bob of do"ble mass. The new time period of this system will be

__________.

(T, T, WT, TN)

+. __________ of is not tr"e for S..7.

(7otion is Periodic, Dlastic <estoring force m"st be present, System



may possess inertia, Total Dnergy of system is conser&ed)

/. body is attached to the end of a spring is eEec"ting S..7. at the

eEtreme position its __________.

(5inetic energy is maEim"m, 5inetic Dnergy is 6ero, Both 0inetic and

potential energy are 6ero, its &elocity is maEim"m)

!. The motion of the simple pend"l"m is __________.

(lways simple harmonic, may be simple harmonic, can ne&er be

simple harmonic, circ"lar)

#. body is eEec"ting S..7 if __________.

(ts acceleration is proportional to displacement and directed away

from mean postion, ts acceleration is proportional to displacement

and directed towards mean position, ts acceleration is 6ero, none of

these)

$. body is eEec"ting S..7 at the mean position if __________.

(f its acceleration is maEim"m, its acceleration is 6ero, its &elocity is

6ero, it posseses maEim"m potential energy)

13. body is eEec"ting S..7 at the mean position if __________.(ts acceleration is maEim"m, ts &elocity is maEim"m, t possesses

maEim"m potential energy, none of these)

11. body is eEec"ting S..7 if __________.

(ts amplit"de of motion remains constant, ts amplit"de of motion

may be constant, ts motion is not periodic, its motion may be

&ibratory)

1. body is eEec"ting S..7 with force constant 0 with an amplit"de

a2, when its displacement is E2. ts instantaneo"s 5.D is represented

by __________.

(1N 0(E4a), Q 0E, Q 0(a4E), (0Nm)

1%. simple pend"l"m is performing S..7 with period T. f its length

is do"bled. The new time period will be __________.



(T, 3.+T, .+T, 1.*1* T)

1*. f we increase the length of simple pend"l"m its time period will

__________.

(ncrease, =ecrease, <emain same, becomes in-nite)

1+. simple pend"l"m that beha&es as a seconds pend"l"m on

earth. f it is ta0en to moon. Fhere gra&itational acceleration is one

siEth that on earth. ts time period will become __________.

(*seconds, 1seconds, %.+ seconds, *.$ seconds)

1/. particle is mo&ing in a circ"lar path with constant ang"lar

speed. The motion of its proHection along its any diameter is

__________.

(ProHectile, Translatory, Gibratory, Circ"lar)

1!. The traHectory of the bob of a &ibrating simple pend"l"m after it

has got s"ddenly detached from the thread while passing thro"gh its

mean position is __________.

(Straight 8ine, Circ"lar, Parabolic, yperbolic)

1#. string stretched between two -Eed points is &ibrating in one

segment. The fre;"ency generated is called __________.

(>irst o&ertone, f"ndamental >re;"ency, Second armonic, 'ormalarmonic)

1$. Fhen the temperat"re of air rises, the speed of so"nd wa&es

increases beca"se.

(>re;"ency of the wa&e increases, both fre;"ency and wa&elength

increases, 9nly wa&e length increases, 'either fre;"ency nor

wa&elength changes)

3. The ang"lar speed of the second hand of a watch is __________.

(pN%3 radNs, 1 radNs, pradNs, p radNs)

1. <estoring force is always present in __________.

(8inear 7otion, Circ"lar 7otion, Simple armonic 7otion, ProHectile

7otion)

. The fre;"ency of &ibration in string of sonometer "nder tension T



is f. f the &ibrating length is hal&ed, 0eeping tension constant, for the

same wire, the fre;"ency becomes __________.

(f, 1f, Q f, *f)

%. simple pend"l"m is transported to moon its fre;"ency of

oscillation will __________.

(=ecreases, ncreases, <emain constant, Become 6ero)

*. The pitch of note obtained by pl"c0ing a stretched string wo"ld be

lowered by __________.

(ncreasing the tension of the wire, Pl"c0ing it more &igoro"sly,

red"cing the length of the string, wrapping a length of the -ne wire

ro"nd the string)

+. Fhen pitch of a note is raised then __________.

(>re;"ency is decreased, Speed of so"nd is increased,

speed of so"nd is decreased, wa&elength is increased)

/. __________ of the following m"st diRer for a trans&erse and

longit"dinal wa&e mo&ing in the same direction.

(Fa&elength, >re;"ency, mplit"de, direction of Gibration)!. spectator watching a cric0et match sees the bat stri0es the ball

and hears the so"nd of this abo"t half a second later. This is beca"se

light wa&es and so"nds wa&es ha&e a diRerent __________.

(mplit"de, >re;"ency, ntensity, Speed)

#. n one medi"m a wa&e has a fre;"ency of the wa&e length l and

speed c, the wa&es passes from this medi"m to another where its

speed is N%c. n the second medi"m the __________.

(fre;"ency is still f and the wa&e length still l, fre;"ency is still f, b"t

wa&elength is N% l, the wa&elength is still l, b"t fre;"ency is N%f,

fre;"ency is still f, b"t wa&elenth is %N l)

$. =olphins can comm"nicate by emitting so"nds of fre;"ency

1+3,333 6. f speed of so"nd in water is 1+33 mNs, the wa&elength of



these so"nds will be __________.

(1 m, 3.1 m, 3.31 m, 3.331m)

%3. The motion of the particles of air, when so"nd wa&es passes

thro"gh it is __________.

(Period, Circ"lar, s an eEample of Brownian motion, 7otion will

constant acceleration)

%1. Two stringed instr"ments are playing notes of the same pitch,

__________ of the following m"st be same for these notes.

(mplit"de, >re;"ency, 8ength of String, ;"ality)

%. simple pend"l"m is performing simple harmonic motion (S7)

__________ of the following will remain constant thro"gh o"t its

motion.

(cceleration of the bob, ts amplit"de, >orce on the bob, Gelocity of

the bob)

%%. >or a system to eEec"te S..7, its m"st possesses __________.

(9nly elasticity, 9nly inertia, Dlasticity as well as inertia, 'either

elasticity nor inertia)

%*. spring of force constant 0 is bro0en into two e;"al parts, then

the force constant of each part is __________.(0N, 0, 0NW, 0)

%+. The S "nit for force constant are __________.

(', 'm41, 'm4,'m)

%/. Time period of a simple pend"l"m is T. t is 0ept in a lift, which is

accelerating "pward. The time period of the pend"l"m will __________.

(ncrease, =ecrease, <emain the same, >irst increase then decrease)

%!. n the abo&e ;"estion if the lift mo&es "pwards with "niform

&elocity, its time period will __________.

(ncreases, =ecreases, <emain the same, 'othing can be said)

%#. n the ;"estion n"mber %/, the lift falls freely. They the time

period will __________.



(ncrease, =ecrease, <emain the same, Become in-nite)

%$. body is eEec"ting S..7 of amplit"de . ts potential energy is

maEim"m when it displacement is __________.

(ero, N, , Y)

*3. 7ass m is s"spended from an elastic spring of spring constant 0.

The time period of small oscillation is __________.

(p WmN0, p WmN0, p W0Nm, p W0Nm)

*1. The dimensional form"la for spring constant 0 is __________.

(7T4%, 7T4, 78T47T41)

*. n resonance condition the amplit"de of oscillation is __________.

(Gery small, Small, Gery large, 8arge)

*%. The S "nit of force constant is identical to that of __________.

(Press"re, Dnergy, S"rface Tension, >orce)

**. f the oscillations are highly damped, the amplit"de of oscillation

__________.

(=ecreases with time, ncreases with time, <emains constant with

time, >irst increases then decreases)

*+. The time period of a simple pend"l"m at the centre of the earth is

__________.(ero, n-nity, nity, Same as thaht at the s"rface of the earth)

*/. n S..7 the maEim"m acceleration is a and maEim"m &elocity is

b, its time period is __________.

(pbNa, paNb, aNpb, bNpa)

*!. n S..7 the graph between force and displacement is __________.

(Parabolic, yperbolic, DEponential, 8inear)

*#. The t"ning for0 is of a slightly higher fre;"ency than a for0 B.

they are employed to prod"ce beats. 9n loading the for0 the

fre;"ency of beats will __________.

(ncrease, =ecrease, <emain the same, become 6ero)

*$. Beats are the res"lt of __________.

(=iRraction, Constr"cti&e nterference only, =estr"cti&e nterference



only, Constr"cti&e and =estr"cti&e nterference both)

+3. The distance between two consec"ti&e nodes of a stationary wa&e

is __________.

(l, lN, lN*, lN/)

+1. The stem of a &ibrating t"ning for0 is pressed against a tabletop.

The d"ration of its &ibration __________.

(ncrease, =ecrease, <emains "nchanged, Becomes in-nite)

+. n a simple harmonic motion we ha&e the conser&ation of

__________.

(5inetic energy, Potential energy, Total energy, Dlectrical energy)

+%. The &elocity of longit"dinal &ibrations in a solid depends on its

__________.

(<igidity 7od"l"s, B"l0 7od"l"s, :o"ng2s 7od"l"s, Poison2s <atio)

+*. n a simple harmonic motion __________ is constant.

(5.D is constant, amplit"de is constant, phase is constant, P.D is

constant)

++. Fhen beats are prod"ced by two tra&elling wa&es of nearly the

same fre;"ency then __________.

(the particles &ibrate simple harmonically with a fre;"ency e;"al tothe diRerence in the fre;"encies of the two wa&es, the amplit"de of

&ibration at any point changes simple harmonically with a fre;"ency

e;"al to the diRerence in the fre;"encies of the two wa&es, The

fre;"ency of beats depends on the position, where the beats are

heard, the fre;"ency of beats decreases as the time is passing_

+/. Fhen beats are prod"ced by two tra&elling wa&es of same

amplit"de and of nearly the same fre;"encies, then __________.

(The maEim"m lo"dness heard is two times thaht corresponding to

each of the constit"ent wa&es, The amEim"m lo"dness heard is fo"r

times thaht corresponding to each of the constit"ent wa&es, The

maEim"m lo"dness heard is the same as thaht of corresponding to

each of the constit"ent wa&es, the maEim"m lo"dness heard is #



times thath corresponding to each of the wa&e)

+!. Fhen beats are prod"ced by two wa&es, T1 K a sin 1333pt and

T K a sin 133# pt then __________ of the following gi&es the

fre;"ency of the beats heard.

(#pNsec, # Nsec, *Nsec, *pNsec)

+#. Fhen stationary wa&es are set "p in a medi"m, __________ of the

following statements is correct.

(<arefaction occ"rs at the antinode, Compression ta0es place at all

the nodes, no strain is felt at the antinodes, 7aEim"m strain is felt at

the antinodes)

+$. Fhen stationary wa&es are set then __________.

(ll the particles of the medi"m are in same phase, particles

separated by a distance of an amplit"de o"t of phase, all the particles

between two consecti&e nodes are in phase, particles separated by a

distance of an amplit"de are always in phase)

/3. Fhen stationary wa&es are set "p in a medi"m then __________.

(Dnergy is propagated at a rate do"ble thaht of tra&elling wa&es of

e;"al amplit"de and of e;"al &elocity, the ?"E of energy thro"gh any

area is 6ero, the energy density is same thro"gho"t the space, themedi"m possesses no net energy)

/1. Fhen stationary wa&es are set "p in a medi"m then __________.

(The amplit"de of &ibration changes simple harmonically with the

distance of the particle from the origin, all particles are in the same

phase, diRerent particles of the medi"m ha&e diRerent periods of

oscillation, amplit"de of &ibration of each particle changes simple

harmonically with time)

/. Fhen stationary wa&es are prod"ced in a medi"m. The amplit"de

of &ibration __________.

(of a particle changes from time to time, is the same for particles

separated by half the wa&e length, changes simple harmonically with

time, is the time for all the particles)



/%. Two t"ning for0s and B prod"ce ! beats per second, when

so"nded together. 9n loading the for0 slightly only + beats are

heard in a second. f the fre;"ency of for0 B is 33 cps, the fre;"ency

of the for0 after loading will be __________.

(1$3 cps, 1$+ cps, 13 cps, 3+ cps)

/*. Two for0s and B prod"ce ! beats per second. 9n loading the

for0 slightly the n"mber of beats red"ces to + beats per second. f

the fre;"ency of the for0 B is 33cps. The fre;"ency of the for0

before loading is __________.

(1$3 cps, 1$+ cps, 3! cps, 3+ cps)

/+. n stationary wa&es, the amplit"de of &ibration will ha&e a

maEim"m &al"e at positions separated by a distance e;"al to

__________.

(l, lN, lN*, lN%)

//. n a trans&erse arrangement, a stretched string &ibrates in two

loops. f the same string "nder the same tension &ibrates in one loop,

the fre;"ency in latter case di&ided by the fre;"ency in former case

will be __________.

(1, Q, , W)/!. so"rce of so"nd wa&e mo&es away with the &elocity of so"nd

from a stationary obser&er. The fre;"ency of the note is __________.

(nchanged, =o"bled, hal&ed, s;"ared)

/#. The fre;"ency of a man2s &oice is 33 cps and its wa&elength is

m. f the wa&elength of a child2s &oice is * m then the fre;"ency of

the child2s &oice in the same medi"m is __________.

(33, +, 133, *33)

/$. f the densities of two gases are in the ratio +Z$ then the

&elocities of so"nd in two gases (ha&ing the same &al"e of ratio of

speci-c heats) at the same press"re will be in the ratio __________.

(+ Z $, + Z %, $ Z +, % Z +)

!3. The ratio of the f"ndamental fre;"ency of an organ pipe open at



both ends to that of the organ pipe closed at one end is __________

(1 Z , Z 1, 1.+ Z 1, 1 Z 1)


!1. The &elocity of longit"dinal wa&es passing thro"gh metal rod is

proportional to the s;"are root of __________.

(Tension, :o"ng2s 7od"l"s, B"l0 7od"l"s, <igidity)

!. The &elocity of so"nd wa&es in ?"id medi"m at absol"te

temperat"re T is directly proportional to __________.

(T, T1N, T41N, T41)

!%. The &elocity of trans&erse &ibrations in sonometer "nder tension

T is proportional to __________.

(T, T1N, T41N, T41)

!*. So"nd tra&els faster in __________.

(ir, Fater, Gac""m, lass)

!+. Fhen so"rce of so"nd wa&es mo&es towards an obser&er at rest

in the atmosphere, the pitch of the note heard by the obser&er is

higher beca"se __________.

(Fa&elength of wa&es becomes smaller, Fa&elength remains"nchanged byt the obser&er recei&e a larger n"mber of wa&es per

second, The pitch of the so"rce increases, The &elocity of so"nd

wa&es increases)

!/. So"nd wa&es cannot be __________.

(<e?ected, <efracted, =iRracted, Polari6ed)

!!. Fhen a body tra&elling with s"personic speed approaches a

stationary obser&er the __________.

(The pitch appears to increase, The pitch appears to decrease, The

pitch is "naltered, doppler2s eRect is inapplicable)

!#. Fhen so"nd wa&es tra&el from air to water, the ;"antity that

remains "nchanged is __________.

(Speed, >re;"ency, ntensity, Fa&elength)



!$. Gelocity of so"nd in a gas increases with __________.

(temperat"re, press"re, h"midity, fre;"ency)

#3. Fhen the press"re of the gas is do"bled, the &elocities of so"nd

in it are __________.

(=o"bled, hal&ed, "naltered, s;"ared)

#1. Fhen the temperat"re of a gas is increased to * times the

&elocity of so"nd G becomes __________.

(GN*, GN, G, *G)

#. Gelocity of so"nd is __________.

(=irectly proportional to temperat"re, n&ersely proportional to

temperat"re, ndependent of changes in press"re, ndependent of

amo"nt of h"midity in air)

#%. So"nd wa&es in air are __________.

(8ongit"dinal, Trans&erse, 'either longit"dinal nor trans&erse, both

longit"dinal and trans&erse)

#*. t __________ temperat"re will be &elocity of so"nd be do"ble of

its &al"e at 3@C.

(#1$@C, #1$3@C, #1.$@C, 'one of these)

#+. n sonometer, the fre;"ency of a sonometer wire is gi&en by n K1N8 WTNm. Fhere S "nit of the symbol m is __________.

(0g, 0gm41, 'm41, 0gm4)

#/. n a &ibrating t"ning for0, the wa&es prod"ced between the

prongs of the for0 are __________.

(Progressi&e, Simple armonic, Stationary, Plane)

#!. The S "nit for intensity of so"nd is __________.

(Xo"le, XNs, Xm4, Fm4)

##. The dimensional form"la for intensity is __________.

(78T4, 78T4%, 78@T4%, 78@T4)

#$. Stationary wa&es of fre;"ency 1/+6 are formed in air. f the

&elocity of so"nd wa&es is %%3mNs, the shortest distance between two

nodes is __________.



(1m, m, *m, ero)

$3. Prod"ction of beats is a res"lt of the phenomenon of __________.

(<esonance, nterference, <e?ection, =iRraction)

$1. s a res"lt of interference, energy __________.

(s lost, is gained, is transmitted, remaisn "nchanged as a whole b"t

is distrib"ted)

$. rope can carry a trans&erse wa&e beca"se it has the property of

__________.

(7ass, elasticity, density, compressibility)

$%. The pitch of the whistle of an engine changes in the ratio of / Z +

as it approaches a stationary obser&er. f & is the &elocity of so"nd

wa&es, the &elocity of the engine is __________.

(&, &N%, &N+, &N11)

$*. The speed of wa&e in a rope can be increased by __________.

(Sha0ing the end faster, sha0eing the end o&er a "nder range,

stretching the rope tighter, "sing a hea&ier rope)

$+. =oppler2s eRect applies to __________.

(9n0ly so"nd wa&es, only light wa&es, both so"nd and light wa&es,

neither so"nd nor light wa&es)$/. The distance from crest to crest of any wa&e is called its

__________.

(>re;"ency, Fa&elength, Speed, mplit"de)

$!. So"nd tra&els fastest in __________.

(ir, Fater, ron, Gac""m)

$#. Fhen so"rce and obser&er are mo&ing away from each other the

apparent pitch will __________.

(ncrease, =ecrease, <emain same, Become in-nite)

$$. __________ of the following is the S "nit of fre;"ency.

(ert6, cyclesNsec, netwon, erg)

133. >or a closed pipe, the second o&ertone is the __________.

(Second harmonic, Third harmonic, >o"rth harmonic, >ifth harmonic)



131. wa&e in which the particles of the material mo&e "p and down

as the wa&e goes from left to right is classed as __________.

(8ongit"dinal, Trans&erse, Compressional, So"nd)

13. s a man mo&e directly away from a steady so"rce of so"nd at

constant speed, the so"nd he hears will __________.

(ncrease in fre;"ency and intensity, decrease in fre;"ency and

intensity, stay constant in pitch b"t decrease in lo"dness, remain

constant in both pitch and lo"dness)

13%. =ecibel is __________.

( m"sical instr"ment, m"sical note, a meas"re of intensity le&el, the

wa&elength of noise)

13*. ncreased lo"dness prod"ced when two bodies &ibrate

sympathetically is called __________.

(n echo, beats, destr"cti&e interference, resonance)

13+. =amping is a __________.

(<ed"ction in fre;"ency, <ed"ction in wa&elength, red"ction in

amplit"de, ll of these)

13/. Fa&elength is the distance between two nearest particles of the

medi"m ha&ing phase diRerence __________.(pN*, pN, p, 3)

13!. t the mean position of &ibration, the &elocity of the &ibrating

particle is __________.

(ero, n-nity, 7aEim"m, 'one of these)

13#. The pitch of a so"nd is determined by its __________.

(Speed, >re;"ency, =irection, '"mber of beats)

13$. Fhen the soldiers corss a bridge, they are ad&ised to march o"t

of step d"e to the __________.

(<esonance, igh fre;"ency, 'oise prod"ced, >act thath bridge is

wea0)

113. p"lse on a string is in&erted when it is re?ected from a

__________.



(free end, -Eed end, both free and -Eed end, none of these)

111. Fhen two &ibrating systems are in resonance, then their

__________.

(mplit"de are e;"al, >re;"encies are e;"al, <esistances are e;"al,

Temperat"res are e;"al)

11. So"nds abo&e a fre;"ency of 3333 6 are called __________.

(S"personic, infrasonic, hypersonic, "ltrasonic)

11%. Fhen wa&es go from one place to another, they transport

__________.

(mplit"de, >re;"ency, Fa&elength, Dnergy)

11*. Trans&erse wa&es are tra&eling along string, when the tension is

increased to fo"r times its original &al"e, the &elocity of the wa&es is

__________.

(=o"bled, red"ced to one half, red"ced to one fo"rth, increased to

fo"r times its original &al"e)

11+. To prod"ce beats it is necessary to "sed two wa&es __________.

(tra&eling in opposite direction, of slightly diRerent fre;"encies, of

e;"al wa&elength, of e;"al amplit"de)

11/. The amplit"de of so"nd wa&e determines its __________.(8o"dness, Pitch, <e&erberation, nterference)

11!. 9&ertones are __________.

(Beats, the f"ndamental prod"ced in a pipe, the notes prod"ced in a

pipe other than the f"ndamental, all of these)

11#. Two t"ning for0s of %*3 and %*% 6 are so"nded together. The

res"lting beats per second will be __________.

(1, , %, *)

11$. The speed of so"nd wa&es in air ha&ing a fre;"ency of +/ 6

compared with the speed of so"nd wa&es ha&ing a fre;"ency of +1

6 is __________.

(half as great, the same, twice as great, fo"r times as great)

13. The apparent change in fre;"ency d"e to a relati&e motion



between the so"rce and the obser&er is 0nown as __________.

(8aplace2s Priciple, Sabine2s Principle, 'ewtonian2s Principle,

=oppler2s Principle)

11. f D is the coeOcient of &ol"me elasticity (B"l0 7od"l"s) of the

medi"m and d its density, then the &elocity of a longit"dinal wa&e in

?"id is gi&en by __________.

(& K DNP, & K WDNd, & K PND, & K WPND)

1. Fe 0now that the &elocity of so"nd obtained from 'ewton2s

form"la is m"ch less than the eEperimental &al"e. The reason for this

is __________.

(So"nd tra&els in air "nder isothermal conditions, so"ndtra&els in air

"nder adiabatic conditions, so"nd tra&els in air as a trans&erse wa&e

motion, none of these is correct)

1%. Gelocity of so"nd as gi&en by 8aplace is __________.

(& K WgrNd, & K rWgNd, & K grNd, & K gWrNd)

1*. t is possible to recogni6e a person by hearing his &oice e&en if

he is hidden behind a solid wall. This is d"e to the fact that his &oice

__________.

(has a de-nite pitch, has a de-nite ;"ality, has a de-nite capacitor,can penetrate the wall)

1+. Two wa&es arri&e sim"ltaneo"sly at a point in phase. The

dist"rbance, at the point, d"e to each wa&e is .+ mm and %.+ mm

respecti&ely the res"ltant dist"rbance is __________.

(.+ mm, / mm, %.+ mm, 1mm)

1/. S"ccessi&e nodes or antinodes occ"r at points, separation

between which is __________.

(lN*, lN, %lN*, l)

1!. The period of pend"l"m is determined by its __________.

(8ength, 7ass, 7aEim"m Speed, mplit"de)

1#. <ed shift indicates the __________.

(proach of a star, <ecession of a star, Stationary State of a Star, Si6e



of a star)

Chapter # 4 Fa&e 7otion and So"nd

1. If k is a positive constant __________ of the

following expression represents simple

harmonic motion (x is the displacement of

particle from mean position).

(Acceleration = kx, acceleration = -kx,

acceleration = kx, acceleration = -kx)

. If k and a are the positive constants and x

is the displacement from e!"ili#ri"m

position. __________ of the following

expression represents $.%.&.

('elocit = k (a-x), 'elocit = k(a *

x),'elocit =k(x * a), 'elocit = k(x-

a))

+. A #o# of mass m is hanging from the end

of an elastic spring and exec"ting $.%.&

with a period . If this mass is replaced #

another #o# of mass m, the new time



period of this sstem will #e __________.

(, , , )

. A #o# of mass m is hanging from the end

of an inelastic string is exec"ting $.%.& witha period . If this #o# is replaced # an other

#o# of do"#le mass. he new time period of

this sstem will #e __________.

(, , , )

/. __________ of is not tr"e for $.%.&.(&otion is 0eriodic, lastic 2estoring force

m"st #e present, $stem ma possess

inertia, otal nerg of sstem is conserved)

3. A #od is attached to the end of a springis exec"ting $.%.&. at the extreme position

its __________.

(4inetic energ is maxim"m, 4inetic nerg

is 5ero, 6oth kinetic and potential energ

are 5ero, its velocit is maxim"m)

7. he motion of the simple pend"l"m is



__________.

(Alwas simple harmonic, ma #e simple

harmonic, can never #e simple harmonic,

circ"lar)8. A #od is exec"ting $.%.& if __________.

(Its acceleration is proportional to

displacement and directed awa from mean

postion, Its acceleration is proportional to

displacement and directed towards meanposition, Its acceleration is 5ero, none of

these)

9. A #od is exec"ting $.%.& at the mean

position if __________.

(If its acceleration is maxim"m, itsacceleration is 5ero, its velocit is 5ero, it

posseses maxim"m potential energ)

1:. A #od is exec"ting $.%.& at the mean

position if __________.

(Its acceleration is maxim"m, Its velocit is

maxim"m, It possesses maxim"m potential

energ, none of these)

11. A #od is exec"ting $.%.& if __________.



(Its amplit"de of motion remains constant,

Its amplit"de of motion ma #e constant, Its

motion is not periodic, its motion ma #e

vi#rator)1. A #od is exec"ting $.%.& with force

constant k with an amplit"de ;a<, when its

displacement is ;x<. Its instantaneo"s 4. is

represented # __________.

(1 k(x-a), kx, k(a-x), A(km)1+. A simple pend"l"m is performing $.%.&

with period . If its length is do"#led. he

new time period will #e __________.

(, :./, ./, 1.1 )

1. If we increase the length of simplepend"l"m its time period will __________.

(Increase, >ecrease, 2emain same, #ecomes

in?nite)

1/. A simple pend"l"m that #ehaves as a

seconds pend"l"m on earth. If it is taken to

moon. @here gravitational acceleration is

one sixth that on earth. Its time period will

#ecome __________.



(seconds, 1seconds, +./ seconds, .9

seconds)

13. A particle is moving in a circ"lar path

with constant ang"lar speed. he motion ofits proection along its an diameter is

__________.

(0roectile, ranslator, 'i#rator, Birc"lar)

17. he traector of the #o# of a vi#rating

simple pend"l"m after it has got s"ddenldetached from the thread while passing

thro"gh its mean position is __________.

($traight Cine, Birc"lar, 0ara#olic,

%per#olic)

18. A string stretched #etween two ?xedpoints is vi#rating in one segment. he

fre!"enc generated is called __________.

(Dirst overtone, f"ndamental Dre!"enc,

$econd %armonic, Eormal %armonic)

19. @hen the temperat"re of air rises, the

speed of so"nd waves increases #eca"se.

(Dre!"enc of the wave increases, #oth

fre!"enc and wavelength increases, Fnl



wave length increases, Eeither fre!"enc

nor wavelength changes)

:. he ang"lar speed of the second hand of

a watch is __________.(p+: rads, 1 rads, prads, p rads)

1. 2estoring force is alwas present in

__________.

(Cinear &otion, Birc"lar &otion, $imple

%armonic &otion, 0roectile &otion). he fre!"enc of vi#ration in string of

sonometer "nder tension is f. If the

vi#rating length is halved, keeping tension

constant, for the same wire, the fre!"enc

#ecomes __________.(f, 1f, f, f)

+. A simple pend"l"m is transported to

moon its fre!"enc of oscillation will

__________.

(>ecreases, Increases, 2emain constant,

6ecome 5ero)

. he pitch of note o#tained # pl"cking a

stretched string wo"ld #e lowered #



__________.

(Increasing the tension of the wire, 0l"cking

it more vigoro"sl, red"cing the length of

the string, wrapping a length of the ?newire ro"nd the string)

/. @hen pitch of a note is raised then

__________.

(Dre!"enc is decreased, $peed of so"nd is

increased,speed of so"nd is decreased, wavelength is

increased)

3. __________ of the following m"st diGer fora transverse and longit"dinal wave moving

in the same direction.

(@avelength, Dre!"enc, Amplit"de,

direction of 'i#ration)

7. A spectator watching a cricket match

sees the #at strikes the #all and hears the

so"nd of this a#o"t half a second later. his

is #eca"se light waves and so"nds waves



have a diGerent __________.

(Amplit"de, Dre!"enc, Intensit, $peed)

8. In one medi"m a wave has a fre!"enc

of the wave length l and speed c, the wavespasses from this medi"m to another where

its speed is +c. In the second medi"m the

__________.

(fre!"enc is still f and the wave length still

l, fre!"enc is still f, #"t wavelength is + l,the wavelength is still l, #"t fre!"enc is

+f, fre!"enc is still f, #"t wavelenth is +

l)

9. >olphins can comm"nicate # emitting

so"nds of fre!"enc 1/:,::: %5. If speed ofso"nd in water is 1/:: ms, the wavelength

of these so"nds will #e __________.

(1 m, :.1 m, :.:1 m, :.::1m)

+:. he motion of the particles of air, when

so"nd waves passes thro"gh it is __________.

(0eriod, Birc"lar, Is an example of 6rownian

motion, &otion will constant acceleration)

+1. wo stringed instr"ments are plaing



notes of the same pitch, __________ of the

following m"st #e same for these notes.

(Amplit"de, Dre!"enc, Cength of $tring,

!"alit)+. A simple pend"l"m is performing simple

harmonic motion ($%&) __________ of the

following will remain constant thro"gh o"t

its motion.

(Acceleration of the #o#, Its amplit"de,Dorce on the #o#, 'elocit of the #o#)

++. Dor a sstem to exec"te $.%.&, its m"st

possesses __________.

(Fnl elasticit, Fnl inertia, lasticit as

well as inertia, Eeither elasticit nor inertia)

+. A spring of force constant k is #roken

into two e!"al parts, then the force constant

of each part is __________.

(k, k, k, k)

+/. he $I "nit for force constant are

__________.

(E, Em-1, Em-,Em)



+3. ime period of a simple pend"l"m is . It

is kept in a lift, which is accelerating

"pward. he time period of the pend"l"m

will __________.(Increase, >ecrease, 2emain the same, Dirst

increase then decrease)

+7. In the a#ove !"estion if the lift moves

"pwards with "niform velocit, its time

period will __________.(Increases, >ecreases, 2emain the same,

Eothing can #e said)

+8. In the !"estion n"m#er +3, the lift falls

freel. he the time period will __________.

(Increase, >ecrease, 2emain the same,6ecome in?nite)

+9. A #od is exec"ting $.%.& of amplit"de

A. Its potential energ is maxim"m when it

displacement is __________.

(Hero, A, A, A)

:. &ass m is s"spended from an elastic

spring of spring constant k. he time period

of small oscillation is __________.



(p mk, p mk, p km, p km)

1. he dimensional form"la for spring

constant k is __________.

(&-+, &-, &C-&-1). In resonance condition the amplit"de of

oscillation is __________.

('er small, $mall, 'er large, Carge)

+. he $I "nit of force constant is identical

to that of __________.(0ress"re, nerg, $"rface ension, Dorce)

. If the oscillations are highl damped, the

amplit"de of oscillation __________.

(>ecreases with time, Increases with time,

2emains constant with time, Dirst increasesthen decreases)

/. he time period of a simple pend"l"m at

the centre of the earth is __________.

(Hero, In?nit, Jnit, $ame as thaht at the

s"rface of the earth)

3. In $.%.& the maxim"m acceleration is a

and maxim"m velocit is #, its time period is

__________.



(p#a, pa#, ap#, #pa)

7. In $.%.& the graph #etween force and

displacement is __________.

(0ara#olic, %per#olic, xponential, Cinear)8. he t"ning fork A is of a slightl higher

fre!"enc than a fork 6. the are emploed

to prod"ce #eats. Fn loading the fork A the

fre!"enc of #eats will __________.

(Increase, >ecrease, 2emain the same,#ecome 5ero)

9. 6eats are the res"lt of __________.

(>iGraction, Bonstr"ctive Interference onl,

>estr"ctive Interference onl, Bonstr"ctive

and >estr"ctive Interference #oth)/:. he distance #etween two consec"tive

nodes of a stationar wave is __________.

(l, l, l, l3)

/1. he stem of a vi#rating t"ning fork is

pressed against a ta#letop. he d"ration of

its vi#ration __________.

(Increase, >ecrease, 2emains "nchanged,

6ecomes in?nite)



/. In a simple harmonic motion we have the

conservation of __________.

(4inetic energ, 0otential energ, otal

energ, lectrical energ)/+. he velocit of longit"dinal vi#rations in

a solid depends on its __________.

(2igidit &od"l"s, 6"lk &od"l"s, Ko"ng<s

&od"l"s, 0oison<s 2atio)

/. In a simple harmonic motion __________ isconstant.

(4. is constant, amplit"de is constant,

phase is constant, 0. is constant)

//. @hen #eats are prod"ced # two

travelling waves of nearl the samefre!"enc then __________.

(the particles vi#rate simple harmonicall

with a fre!"enc e!"al to the diGerence in

the fre!"encies of the two waves, the

amplit"de of vi#ration at an point changes

simple harmonicall with a fre!"enc e!"al

to the diGerence in the fre!"encies of the

two waves, he fre!"enc of #eats depends



on the position, where the #eats are heard,

the fre!"enc of #eats decreases as the

time is passing_

/3. @hen #eats are prod"ced # twotravelling waves of same amplit"de and of

nearl the same fre!"encies, then __________.

(he maxim"m lo"dness heard is two times

thaht corresponding to each of the

constit"ent waves, he amxim"m lo"dnessheard is fo"r times thaht corresponding to

each of the constit"ent waves, he

maxim"m lo"dness heard is the same as

thaht of corresponding to each of the

constit"ent waves, the maxim"m lo"dnessheard is 8 times thath corresponding to

each of the wave)

/7. @hen #eats are prod"ced # two waves,

1 = a sin 1:::pt and = a sin 1::8 pt

then __________ of the following gives the

fre!"enc of the #eats heard.

(8psec, 8 sec, sec, psec)

/8. @hen stationar waves are set "p in a



medi"m, __________ of the following

statements is correct.

(2arefaction occ"rs at the antinode,

Bompression takes place at all the nodes, nostrain is felt at the antinodes, &axim"m

strain is felt at the antinodes)

/9. @hen stationar waves are set then

__________.

(All the particles of the medi"m are in samephase, particles separated # a distance of

an amplit"de o"t of phase, all the particles

#etween two consective nodes are in phase,

particles separated # a distance of an

amplit"de are alwas in phase)3:. @hen stationar waves are set "p in a

medi"m then __________.

(nerg is propagated at a rate do"#le thaht

of travelling waves of e!"al amplit"de and

of e!"al velocit, the L"x of energ thro"gh

an area is 5ero, the energ densit is same

thro"gho"t the space, the medi"m

possesses no net energ)



31. @hen stationar waves are set "p in a

medi"m then __________.

(he amplit"de of vi#ration changes simple

harmonicall with the distance of theparticle from the origin, all particles are in

the same phase, diGerent particles of the

medi"m have diGerent periods of oscillation,

amplit"de of vi#ration of each particle

changes simple harmonicall with time)3. @hen stationar waves are prod"ced in

a medi"m. he amplit"de of vi#ration

__________.

(of a particle changes from time to time, is

the same for particles separated # half thewave length, changes simple harmonicall

with time, is the time for all the particles)

3+. wo t"ning forks A and 6 prod"ce 7

#eats per second, when so"nded together.

Fn loading the fork A slightl onl / #eats

are heard in a second. If the fre!"enc of

fork 6 is :: cps, the fre!"enc of the fork A

after loading will #e __________.



(19: cps, 19/ cps, 1: cps, :/ cps)

3. wo forks A and 6 prod"ce 7 #eats per

second. Fn loading the fork A slightl the

n"m#er of #eats red"ces to / #eats persecond. If the fre!"enc of the fork 6 is

::cps. he fre!"enc of the fork A #efore

loading is __________.

(19: cps, 19/ cps, :7 cps, :/ cps)

3/. In stationar waves, the amplit"de ofvi#ration will have a maxim"m val"e at

positions separated # a distance e!"al to

__________.

(l, l, l, l+)

33. In a transverse arrangement, a stretchedstring vi#rates in two loops. If the same

string "nder the same tension vi#rates in

one loop, the fre!"enc in latter case

divided # the fre!"enc in former case will

#e __________.

(1, , , )

37. A so"rce of so"nd wave moves awa

with the velocit of so"nd from a stationar



o#server. he fre!"enc of the note is

__________.

(Jnchanged, >o"#led, halved, s!"ared)

38. he fre!"enc of a man<s voice is ::cps and its wavelength is m. If the

wavelength of a child<s voice is m then the

fre!"enc of the child<s voice in the same

medi"m is __________.

(::, /, 1::, ::)39. If the densities of two gases are in the

ratio /M9 then the velocities of so"nd in two

gases (having the same val"e of ratio of

speci?c heats) at the same press"re will #e

in the ratio __________.(/ M 9, / M +, 9 M /, + M /)

7:. he ratio of the f"ndamental fre!"enc

of an organ pipe open at #oth ends to that

of the organ pipe closed at one end is

__________

(1 M , M 1, 1./ M 1, 1 M 1)

Nimport

OextensionsPoogleAd$ensePoogleAd$ense



.cssOQ

71. he velocit of longit"dinal waves

passing thro"gh metal rod is proportional tothe s!"are root of __________.

(ension, Ko"ng<s &od"l"s, 6"lk &od"l"s,

2igidit)

7. he velocit of so"nd waves in L"id

medi"m at a#sol"te temperat"re isdirectl proportional to __________.

(, 1, -1, -1)

7+. he velocit of transverse vi#rations in

sonometer "nder tension is proportional to

__________.(, 1, -1, -1)

7. $o"nd travels faster in __________.

(Air, @ater, 'ac""m, Plass)

7/. @hen so"rce of so"nd waves moves

towards an o#server at rest in the

atmosphere, the pitch of the note heard #

the o#server is higher #eca"se __________.

(@avelength of waves #ecomes smaller,



@avelength remains "nchanged #t the

o#server receive a larger n"m#er of waves

per second, he pitch of the so"rce

increases, he velocit of so"nd wavesincreases)

73. $o"nd waves cannot #e __________.

(2eLected, 2efracted, >iGracted, 0olari5ed)

77. @hen a #od travelling with s"personic

speed approaches a stationar o#server the__________.

(he pitch appears to increase, he pitch

appears to decrease, he pitch is "naltered,

doppler<s eGect is inapplica#le)

78. @hen so"nd waves travel from air towater, the !"antit that remains "nchanged

is __________.

($peed, Dre!"enc, Intensit, @avelength)

79. 'elocit of so"nd in a gas increases with

__________.

(temperat"re, press"re, h"midit,

fre!"enc)

8:. @hen the press"re of the gas is do"#led,



the velocities of so"nd in it are __________.

(>o"#led, halved, "naltered, s!"ared)

81. @hen the temperat"re of a gas is

increased to times the velocit of so"nd '#ecomes __________.

(', ', ', ')

8. 'elocit of so"nd is __________.

(>irectl proportional to temperat"re,

Inversel proportional to temperat"re,Independent of changes in press"re,

Independent of amo"nt of h"midit in air)

8+. $o"nd waves in air are __________.

(Congit"dinal, ransverse, Eeither

longit"dinal nor transverse, #othlongit"dinal and transverse)

8. At __________ temperat"re will #e velocit

of so"nd #e do"#le of its val"e at :RB.

(819RB, 819:RB, 81.9RB, Eone of these)

8/. In sonometer, the fre!"enc of a

sonometer wire is given # n = 1C m.

@here $I "nit of the sm#ol m is __________.

(kg, kgm-1, Em-1, kgm-)



83. In a vi#rating t"ning fork, the waves

prod"ced #etween the prongs of the fork

are __________.

(0rogressive, $imple %armonic, $tationar,0lane)

87. he $I "nit for intensit of so"nd is

__________.

(So"le, Ss, Sm-, @m-)

88. he dimensional form"la for intensit is__________.

(&C-, &C-+, &CR-+, &CR-)

89. $tationar waves of fre!"enc 13/%5 are

formed in air. If the velocit of so"nd waves

is ++:ms, the shortest distance #etweentwo nodes is __________.

(1m, m, m, Hero)

9:. 0rod"ction of #eats is a res"lt of the

phenomenon of __________.

(2esonance, Interference, 2eLection,

>iGraction)

91. As a res"lt of interference, energ

__________.



(Is lost, is gained, is transmitted, remaisn

"nchanged as a whole #"t is distri#"ted)

9. A rope can carr a transverse wave

#eca"se it has the propert of __________.(&ass, elasticit, densit, compressi#ilit)

9+. he pitch of the whistle of an engine

changes in the ratio of 3 M / as it approaches

a stationar o#server. If v is the velocit of

so"nd waves, the velocit of the engine is__________.

(v, v+, v/, v11)

9. he speed of wave in a rope can #e

increased # __________.

($haking the end faster, shakeing the endover a "nder range, stretching the rope

tighter, "sing a heavier rope)

9/. >oppler<s eGect applies to __________.

(Fnkl so"nd waves, onl light waves, #oth

so"nd and light waves, neither so"nd nor

light waves)

93. he distance from crest to crest of an

wave is called its __________.



(Dre!"enc, @avelength, $peed, Amplit"de)

97. $o"nd travels fastest in __________.

(Air, @ater, Iron, 'ac""m)

98. @hen so"rce and o#server are movingawa from each other the apparent pitch will

__________.

(Increase, >ecrease, 2emain same, 6ecome

in?nite)

99. __________ of the following is the $I "nit of fre!"enc.

(%ert5, cclessec, netwon, erg)

1::. Dor a closed pipe, the second overtone

is the __________.

($econd harmonic, hird harmonic, Do"rthharmonic, Difth harmonic)

1:1. A wave in which the particles of the

material move "p and down as the wave

goes from left to right is classed as

__________.

(Congit"dinal, ransverse, Bompressional,

$o"nd)

1:. As a man move directl awa from a



stead so"rce of so"nd at constant speed,

the so"nd he hears will __________.

(Increase in fre!"enc and intensit,

decrease in fre!"enc and intensit, staconstant in pitch #"t decrease in lo"dness,

remain constant in #oth pitch and lo"dness)

1:+. >eci#el is __________.

(A m"sical instr"ment, m"sical note, a

meas"re of intensit level, the wavelengthof noise)

1:. Increased lo"dness prod"ced when two

#odies vi#rate smpatheticall is called

__________.

(An echo, #eats, destr"ctive interference,resonance)

1:/. >amping is a __________.

(2ed"ction in fre!"enc, 2ed"ction in

wavelength, red"ction in amplit"de, All of

these)

1:3. @avelength is the distance #etween

two nearest particles of the medi"m having

phase diGerence __________.



(p, p, p, :)

1:7. At the mean position of vi#ration, the

velocit of the vi#rating particle is __________.

(Hero, In?nit, &axim"m, Eone of these)

1:8. he pitch of a so"nd is determined #

its __________.

($peed, Dre!"enc, >irection, E"m#er of

#eats)1:9. @hen the soldiers corss a #ridge, the

are advised to march o"t of step d"e to the

__________.

(2esonance, %igh fre!"enc, Eoise

prod"ced, Dact thath #ridge is weak)11:. A p"lse on a string is inverted when it

is reLected from a __________.

(free end, ?xed end, #oth free and ?xed

end, none of these)

111. @hen two vi#rating sstems are in

resonance, then their __________.

(Amplit"de are e!"al, Dre!"encies are

e!"al, 2esistances are e!"al, emperat"res



are e!"al)

11. $o"nds a#ove a fre!"enc of :::: %5

are called __________.

($"personic, infrasonic, hpersonic,"ltrasonic)

11+. @hen waves go from one place to

another, the transport __________.

(Amplit"de, Dre!"enc, @avelength, nerg)

11. ransverse waves are traveling along

string, when the tension is increased to fo"r

times its original val"e, the velocit of the

waves is __________.

(>o"#led, red"ced to one half, red"ced toone fo"rth, increased to fo"r times its

original val"e)

11/. o prod"ce #eats it is necessar to

"sed two waves __________.

(traveling in opposite direction, of slightl

diGerent fre!"encies, of e!"al wavelength,

of e!"al amplit"de)

113. he amplit"de of so"nd wave



determines its __________.

(Co"dness, 0itch, 2ever#eration,

Interference)

117. Fvertones are __________.(6eats, the f"ndamental prod"ced in a pipe,

the notes prod"ced in a pipe other than the

f"ndamental, all of these)

118. wo t"ning forks of +: and ++ %5 are

so"nded together. he res"lting #eats persecond will #e __________.

(1, , +, )

119. he speed of so"nd waves in air having

a fre!"enc of /3 %5 compared with the

speed of so"nd waves having a fre!"enc of /1 %5 is __________.

(half as great, the same, twice as great, fo"r

times as great)

1:. he apparent change in fre!"enc d"e

to a relative motion #etween the so"rce and

the o#server is known as __________.

(Caplace<s 0riciple, $a#ine<s 0rinciple,

Eewtonian<s 0rinciple, >oppler<s 0rinciple)



11. If is the coeTcient of vol"me

elasticit (6"lk &od"l"s) of the medi"m and

d its densit, then the velocit of a

longit"dinal wave in L"id is given #__________.

(v = 0, v = d, v = 0, v = 0)

1. @e know that the velocit of so"nd

o#tained from Eewton<s form"la is m"ch

less than the experimental val"e. hereason for this is __________.

($o"nd travels in air "nder isothermal

conditions, so"ndtravels in air "nder

adia#atic conditions, so"nd travels in air as

a transverse wave motion, none of these iscorrect)

1+. 'elocit of so"nd as given # Caplace is

__________.

(v = grd, v = rgd, v = grd, v = grd)

1. It is possi#le to recogni5e a person #

hearing his voice even if he is hidden #ehind

a solid wall. his is d"e to the fact that his

voice __________.



(has a de?nite pitch, has a de?nite !"alit,

has a de?nite capacitor, can penetrate the

wall)

1/. wo waves arrive sim"ltaneo"sl at apoint in phase. he dist"r#ance, at the

point, d"e to each wave is ./ mm and +./

mm respectivel the res"ltant dist"r#ance is

__________.

(./ mm, 3 mm, +./ mm, 1mm)13. $"ccessive nodes or antinodes occ"r at

points, separation #etween which is

__________.

(l, l, +l, l)

17. he period of pend"l"m is determined# its __________.

(Cength, &ass, &axim"m $peed, Amplit"de)

18. 2ed shift indicates the __________.

(Aproach of a star, 2ecession of a star,

$tationar $tate of a $tar, $i5e of a star)

Bhapter 9 - @ave Aspect of Cight

1. 8ight wa&es __________.



(<e;"ire air or another gas to tra&el thro"gh, re;"ire an electric -eld totra&el thro"gh, re;"ire a magnetic -eld to tra&el thro"gh, can tra&elthro"gh a perfect &ac""m)

. The bl"e colo"r of the s0y is d"e to d"e to fact that __________.

(<ed light is absorbed, bl"e colo"r is preferentially scattered, red lightis preferentially scattered, this is the nat"real colo"r)

%. The wa&elength 13333 @ belong to __________.

(nfra red spectr"m, ltra &iolet spectr"m, &isible range, green light)

*. 7onochromatic green light has a wa&elength of +3 nm in air. The

wa&elength of this light inside glass of refracti&e indeE 1.+ isapproEimately.

(%33nm, %*3nm, +3nm, !#3nm)

+. The property of light wa&es thath leads to the phenomenon of colo"ris their __________.

(Gelocity, mplit"de, "ality, Fa&elength)

/. f Plan02s constant h K /./+ E 134%* XN6. The energy associatedwith light with a wa&elength of 1/3nm is __________.

(1.* E 1341# X, 1.## E 1341# X, 1.* E 1341+ X, 1.* E 1341+ X)

!. __________ proposed electromagnetic wa&e theory.

(>resnel, "ygen, 7aEwell, >ra"nhoRer)

#. Two light wa&es meet at time when one has the instantaneo"samplit"de and the other has the instantaneo"s amplit"de B. Theircombined amplit"de is __________.

( M B, between M B and A( M B), A B, ndeterminate)

$. 7aEwell based his theory of electromagnetic wa&es on the



hypothesis that a changing electric -eld gi&es rise to __________.

(n electric c"rrent, stream of electrons, magnetic -eld, longit"dinalwa&es)

13. __________ of the following phenomenon cannot be eEplained by the

wa&e theory of light.

(<efraction, nterference, Photoelectric, Polari6ation)

11. n the complete electromagnetic spectr"m __________ of thefollowing has least fre;"ency.

1. The n"mber of fringes passing thro"gh a reference point, if themo&eable mirror of 7ichlson2s interferometer is mo&ed by 3.3# mm,

when the wa&elength of light "sed is +#33 @, are __________.

(!+, !/ +3, .!+)

1%. __________ of the following demonstrates the trans&erse nat"re oflight wa&es.

(nterference, Polari6ation, =iRraction, <efraction)

1*. The loc"s of all points in the same state of &ibrations is 0nown as __________.

(alf period 6one, a half wa&e 6one, a wa&e front, none of thse)

1+. __________ is in&alid for a photon.

(ts mass is hn, it has 6ero rest mass, all its energy is 5.D, itsmoment"m is hnNc)

1/. __________ of the following is not a property of light wa&es.

(they transfer energy from one place to another, They can tra&elthro"gh &ac""m, They are trans&erse wa&es, They tra&el at the samespeed thro"gh glass and water)

1!. The phenomenon of interference of light was -rst demonstrated by



__________.

('ewton, Dinstein, Thomas :o"ng, 7ichelson)

1#. __________ of the following is not associated with light wa&es.

(Transmission of energy, nterference, =iRraction, 8ongit"dinalGibrations)

1$. >ormation of colo"r in a thin -lm of oil is d"e to __________.

(nterference of light wa&es, diRraction of light wa&es, Scattering oflight rays, =ispersion of light rays)

3. 'ewton2s rings are formed d"e to the phenomenon of __________.

(<e?ection, <efraction, =iRraction, thin -lm interference)

1. nterferometer meas"res __________.

(Gelocity of light in gases, wa&elength of monochromatic light,thic0ness of &ery thin obHects, ill"minating power of light)

. __________ of the following is not tr"e for interference of light.

(The two wa&es sho"ld be of same amplit"de, the two wa&es sho"ld bephase coherent, the two wa&es sho"ld tra&el in the opposite directionthro"gh the medi"m, the two wa&es sho"ld be monochromatic)

%. Two monochromatic wa&es of same wa&elength are tra&ellingthro"gh a medi"m. They can interfere destr"cti&ely. Pro&ided theirpath diRerence is __________.

(l, l, +N l, +l)

*. =o"ble slit arrangement is s"ggested by :o"ng in order to obtain __________.

(monochromatic light, phase coherence, constr"cti&e interference,destr"cti&e interference)



+. n :o"ng2s do"ble slit arrangement, the bright fringes obtained are __________.

(9f "niform intensity, of non "niform width, colo"red, circ"lar)

/. >or constr"cti&e interference the path diRerence sho"ld be

__________.

(ero or integral m"ltiple of wa&elength, only integral m"ltiple ofwa&elength, 6ero or m"ltiple of wa&elength, odd m"ltiple ofwa&elenght)

!. The two light wa&es can interference destr"cti&ely if __________.

(They reach a point in phase, they reach a point o"t of phase by p

radian, they are tra&eling thro"gh a medi"m in opposite direction,none of these is tr"e)

#. 'ewton2s rings can be obtained by "sing a __________.

(Plano con&eE lens of small focal length, plano con&eE lens of &erylarge focal length, conca&e lens of large focal length, ?at glass slab)

$. n 'ewton2s rings the central angle is __________.

(lways bright, always dar0, can be bright or dar0, of bl"e colo"r)

%3. The conditions for the prod"ction of constr"cti&e and destr"cti&einterference are re&ersed d"e to the fact that on stri0ing the thin -lm

__________.

(Two rays of splitted light "nder go phase change of 1#3@, 9ne of tworays of splitted light "ndergo phase change of 1#3@, light is diRracted,light is polari6ed)

%1. Fhen electromagnetic wa&es stri0e the bo"ndary of densermedi"m they are __________.

(<e?ected, in phase, <e?ected o"t of phase by 1#3@, re?ected, theyare completely abosrbed)



%. n 7ichelson interferometer semi sil&ered mirror is "sed to obtain __________.

(Thin -lm interference, Phase coherence, mono chromatic light,colo"red fringe)

%%. =iRraction is special type of __________.

(<e?ection, <efraction, nterference, Polari6ation)

%*. >resnel2s type diRraction is obser&ed when __________.

(9nly screen is placed at -nite distance, 9nly so"rce is placed at -nitedistance, Both so"rce and screen are at -nite distance, 'either so"rcenor screen is at -nite distance)

%+. >ra"nhoRer2s diRraction is obser&ed when __________.

(9nly screen is placed at -nite distance, so"ce is placed at -nitedistance, neither so"rce nor screen is at -nite distance)

%/. n >ra"nhoRer2s diRraction wa&e front "sed is __________.

(Spherical, Circ"lar, Plane, Conical)

%!. n diRraction pattern of monochromatic light the bright bandsformed are __________.

(9f "niform intensity, of non4"niform intensity, of "niform width, are ofdiRerent colo"rs)

%#. The points of constr"cti&e interference of light are __________.

(lways bright, may be bright or dar0, always dar0, neither bright nordar0)

%$. The diRraction obser&ed by diRraction grating can also be termedas __________.

(Single slit diRraction, =o"ble slit =iRraction, 7"ltiple Slit =iRraction,>resnel2s =iRraction)



*3. The grating "sed to obser&e, diRraction of &isible light can ha&eapproEimately __________.

(%33 lines per cm, %333 lines per cm, 1+333 lines per cm, %3 lines percm)

*1. [4ray diRraction can be obser&ed by "sing __________.

(=iRraction rating, <oc0 salt crystal, Con&eE lens, 7ichlsons2sinterferometer)

*. The phenomenon of 'ewton2s rings can be "sed to chec0 the __________.

(Fa&elength of monochromatic light, phase coherence of two so"rces,?atness of any glass s"rface, &elocity of light)

*%. Two so"rces of light are said to be coherent if __________.

(they prod"ce wa&es of the same wa&e length, they ha&e the sameamplit"de of &ibration, they prod"ce wa&es in the medi"msim"ltaneo"sly, they prod"ce wa&es of the same amplit"de)

**. s the order increases, the width of a dar0 band in diRractionpatterns __________.

(ncreases, =ecreases, =oes not change, becomes in-nity)

*+. The path diRerence corresponding to a phase diRerence of p radianis __________.

(l, lN, lN* l)

*/. __________ of the following phenomenon can not be eEplained onthe particle nat"re of light.

(Photo Dlectric DRect, Compton2s DRect, Pair Prod"ction, nterference)

*!. >ringe spacing is de-ned as the distance between two consec"ti&e __________.



(Crests, Bright fringes only, =ar0 fringes only, Bright or dar0 fringes)

*#. f we narrow the distance between two slits in :o"ng2s eEperimentthe fringes width __________.

(ncreases, =ecreases, <emains same, becomes 6ero)

*$. Fhen 'ewton2s rings interference pattern is &iewed from abo&e bymeans of re?ected light, the central spot is __________.

(=ar0, 7"lticolo"red, Bright, 'one of these)

+3. There are two types of diRraction >resnel and __________.

(7ichelson, =e Broglie, >ra"n ofer, "ygens)

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11.the Scope of Physics