Sample Paper Physics

8/11/2019 Sample Paper Physics

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Sample Paper

Science Quiz (Physics)

Q 1. Units of magnetic flux are :

(a) weber/metre (b) newton metre/ampere

(c) joule x coulomb/meter (d) tesla

Q 2. Magnetic intensit is measured in :

(a) ! m "1 (b) tesla(c) gauss (d) weber

Q #. $art% %as a mass of &.' x 12* +g. ,%e a-erage mass of atoms t%at ma+e up t%e eart% is* u. umber of atoms in eart% is :

(a) '. x 1*' (b) '. x 1*(c) '. x 1&2 (d) 1.*' x 12*

Q *. 0%ic% of t%e following is a dimensional constant

(a) refracti-e index (b) dielectric constant(c) relati-e densit (d) gra-itational constant

Q &. f units of two sstems of measurement are in t%e ratio 2 : #3 t%en t%e ratio of units ofangular momentum in t%ose two sstem is :

(a) 2 : # (b) ' : *(c) * : ' (d) 1 : 1

Q . f speed of lig%t (c)3 acceleration due to gra-it (g) and pressure (p) are ta+en asfundamental units3 t%e dimensions of gra-itational constant (4) are :

(a) c g p" # (b) c2g#p"2

(c) cg2p"1 (d) c2g2p"2

Q 5. ,%e lengt% of a clinder is measures wit% a metre rod %a-ing least count .1 cm. tsdiameter is measured wit% -ernier callipers %a-ing least count .1 cm. 4i-en t%e lengt% is &6cm and radius is 2. cm. ,%e percentage error in t%e calculated -alue of -olume will be :

(a) 27 (b) 17(c) #7 (d) *7

Q . 8ow man seconds are t%ere in a lig%t fermi

(a) 1" 1& (b) #. x 1

(c) #.## x 1" 2* (d) #.# x 1" 5


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Q '. ,%e unit of t%ermal conductance is

(a) 09" 1 (b) 9" 1

(c) 09 (d) 9

Q 1. ! student measured t%e lengt% of a pendulum as 1.#& m and time for # -ibrations as 2

min. 2 sec. using a wrist watc%. ;ind t%e percentage error in g.

(a) 1.527 (b) 2.1 7(c) 1.#7 (d) 1.17

Q 11. ! particle %as two e


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Q 15. ,%e sum of two forces acting at a point is 1 . f t%e resultant force is and itsdirection is perpendicular to minimum force t%en t%e forces are :

(a) and 1 (b) and (c) * and 12 (d) 2 and 1*

Q 1. ,wo boats are mo-ing in same direction in a ri-er. 0%at is t%e best condition so t%att%e mo-e parallel in t%e same direction

(a) Aot% mo-e awa from eac% ot%er(b) ,%e are slig%tl bent to eac% ot%er(c) ,%e are parallel to eac% ot%er(d) t is not possible

Q 1'. !n aeroplane mo-es * m towards nort%3 # m towards west and t%en 12 m-erticall upwards. ,%en its displacement from t%e initial position is :

(a) 1# m (b) 1* m(c) 1& m (d) 1 m

Q 2. ! bus tra-elling t%e first one t%ird distance at a speed of 1+m/%3 t%e next one fourt% at2 +m/% and t%e remaining at * +m/%. ,%e a-erage speed of t%e bus is nearl

(a) ' +m/% (b) 1 +m/%(c) 1 +m/% (d) * +m/%

Q 21. ! stone is dropped from t%e top of a tower and tra-els 2*.& m in last second of its

journe. ,%e %eig%t of t%e tower is :

(a) **.1 m (b) *' m(c) 5.* m (d) 52 m

Q 22. ! bod freel falling from rest %as a -elocit B after its falls t%roug% a %eig%t %. ,%edistance it %as to fall down furt%er for its -elocit to become double is :

(a) % (b) 2 %(c) # % (d) * %

Q 2#. Crops of water fall from t%e roof of a building ' m %ig% at regular inter-als of time3 t%efirst drop reac%ing t%e ground at t%e same instant fourt% drop starts its fall. 0%at are t%edistances of t%e second and t%ird drops from t%e roof

(a) m and 2m (b) m and #m(c) *m and 1m (d) *m and 2m

Q 2* ! particle accelerates from rest at a constant rate for some time and attains a -elocit of m/s. !fterwards it decelerates wit% t%e constant rate and comes to rest. f t%e total time ta+en is* second3 t%e distance tra-elled is :

(a) * m (b) 1 m(c) #2 m (d) none of t%e abo-e


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Q 2& ! car is mo-ing on a road and rain falling -erticall. Delect t%e correct answer:

(a) ,%e rain will stri+e t%e %ind screen onl(b) ,%e rain will stri+e t%e front screen onl(c) ,%e rain will stri+e bot% t%e screens(d) ,%e rain will not stri+e an of t%e screens

Q 2. ! sprinter accelerates to %is maximum speed in *s. f suc% a sprinter finis%es a 1* mrace in 's3 w%at is t%e runnerEs acceleration during t%e first four seconds !ssume accelerationto be constant

(a) #.& ms " 2 (b) *.2 ms " 2

(c) &. ms " 2 (d) &.& ms " 2

Q 25 ! steamer ta+es 12 das to reac% from port x to port . $-er da onl one steamer setsout from bot% t%e ports. 8ow man steamers does eac% steamer meet in t%e open sea

(a) 2# (b) 2&(c) 25 (d) 21

Q 2 n a race for 1 m das%3 t%e first and t%e second runners %a-e a gap of one metre at t%emid wa stage. !ssuming t%e first runner goes stead3 b w%at percentage s%ould t%e secondrunner increases %is speed just to win t%e race.

(a) 27 (b) *7(c) more t%an *7 (d) less t%an * 7

Q 2' ! motor boat co-ers a gi-en distance in %ours mo-ing down stream of a ri-er. tco-ers t%e same distance in 1 %ours mo-ing upstream. ,%e time (in %ours) it ta+es to co-er t%esame distance in still water is :

(a) (b) 5.&(c) 1 (d) 1&

Q # ! point initiall at rest mo-es along x@axis. ts acceleration -aries wit% time asa F ( t G &) in ms"2. f it starts from origin3 t%e distance co-ered in 1 second is :

(a) # m (b) #.& m(c) * m (d) *.& m

Q #1 ! ball rolls off t%e top of stairwa wit% a %ori>ontal -elocit of magnitude 1 6 m/s. ,%esteps are 6 2 m %ig% and 6 2 m wide. 0%ic% step will t%e ball %it first

(a) first (b) second(c) t%ird (d) fourt%


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Q #2 0%en air resistance is ta+en into account w%ile dealing wit% t%e motion of t%e projectilew%ic% of t%e following properties of t%e projectile3 s%ows an increase3

(a) range (b) maximum %eig%t(c) speed at w%ic% it stri+es t%e ground(d) t%e angle at w%ic% t%e projectile stri+es t%e ground

Q ## ,%e range of a projectile fired at an angle of 1& is & m. f it is fired wit% t%e samespeed at an angle of *&3 its range will be :

(a) 2& m (b) & m(c) 1 m (d) 55. m

Q #* n case of a projectile3 w%at is t%e angle between t%e instantaneous -elocit andacceleration at t%e %ig%est point

(a) *& (b) 1

(c) ' (d)

Q #& ! man can t%row a stone to a max distance of metres. ,%e maximum %eig%t to w%ic%it will rise in metres is :

(a) 1 m (b) 2 m(c) # m (d) * m

Q # ,%e eontall at t%etime of %itting !3 t%en t%e -elocit of t%e bullet at ! is :

(a) 2 m/s (b) * m/s(c) m/s (d) 5 m/s


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Q * 0it% w%at minimum speed a particle be projected from t%e origin so t%at it is abl-e topass t%roug% a gi-en point (#m3 * m) :

(a) # ms " 1 (b) * ms " 1

(c) & ms " 1 (d) ms " 1

Q *1 ! car accelerates on a %ori>ontal road due to t%e force exerted b :

(a) road on t%e car (b) engine of car (c) dri-er of car (d) car on eart%

Q *2 ! ball of mass 6 * +g t%rown up in air wit% -elocit of # ms " 1 reac%es t%e %ig%estpoint in2 6 & sec. ,%e air resistance encountered b t%e ball during upward motion is :

(a) . (b) (c) # (d) # dne

Q *# ! fat %ose pipe is %eld %ori>ontal b a fireman. t deli-ers water t%roug% a no>>le at onelitre/sec. f b increasing t%e pressure3 t%e water is deli-ered of 2 litre/sec3 t%e fireman now %asto :

(a) Hus% forward twice as %ard(b) Hus% forward four times as %ard(c) Hus% forward eig%t times as %ard(d) Hull bac+ward four times as %ard

Q ** ! dis% of mass 1 g is +ept %ori>ontall in air b firing bullets of mass & gm eac% at t%e

rate of 1 per sec. f t%e bullets rebound wit% t%e same speed3 w%at is t%e -elocit wit% w%ic%t%e bullets are fired

(a) *' cm/sec (b) ' cm/sec(c) 1*5 cm/sec (d) 1' cm/sec

Q *& ! plaer caug%t a cric+et ball of mass 1& gram3 w%ic% was mo-ing wit% a -elocit of 2m/s. f t%e catc%ing process is completed in 61 second3 t%e blow exerted b t%e ball on t%e%ands of t%e plaer is :

(a) 1 (b) #

(c) 2 (d) 1&

Q * ! cric+et ball of mass 2& g collides wit% a bat wit% -elocit 1 m/s and returns wit%same -elocit wit%in 61 sec. ,%e force acting on bat is :

(a) 2& (b) & (c) 2& (d) &

Q *5 ! mac%ine gun %as a mass & +g. t fires & gram bullets at t%e rate of # bullets perminute at a speed of * ms " 1. 0%at force is re


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Q * ! uniform c%ain of lengt% m and mass * +g is %anging -erticall from a pulle. ,%ewor+ done is winding t%e c%ain on to t%e pulle is (g F 1 m/s2) :

(a) 1 (b) 1 (c) #2 (d) #2

Q *' ! +g woman pus%es a 2 +g suitcase on w%eels3 a distance of 1 m b exerting aconstant force of 2 on it in t%e direction of motion3 starting from rest. ,%e wor+ done b t%ewoman is :

(a) 2 joule (b) 2 joule(c) 2 joule (d) * joule

Q & ! car co-ers a distance of 1 +m along an inclined plane under t%e action of a%ori>ontal force of & . ,%e wor+ done on car is 2& +. ,%e inclination of t%e plane to%ori>ontal is :

(a) o (b) #o(c) o (d) 'o

Q &1 0or+ done in %olding a 1& +g suitcase w%ile waiting for a bus for 1& minutes is :

(a) 1 +g.m (b) 22& (c) 1& x 1& x (d) Iero

Q &2 ! bod is projected -erticall up. !t certain %eig%t % abo-e t%e ground3 its H$ and 9$are in t%e ratio 1 : *. !t w%at %eig%t abo-e t%e ground H$ and 9$ will be in t%e ratio * : 1

(a) * % (b) %/*(c) & % (d) %/&

Q =nce a c%oice is made regarding >ero potential energ references state3 t%e c%anges inpotential energ :

(a) are same (b) are different(c) depend strictl on t%e c%oice of t%e >ero of potential(d) become indeterminate

Q &* ! ball of mass 61 +g mo-es wit% a -elocit of 1 m/sec. 8ow muc% uniform forcewill stop it in 1 seconds

(a) 62 newton (b) 16 newton(c) 61 newton (d) 61 newton

Q && ! rail wa truc+ of mass 2 x 1*+g tra-elling at .& m/s collides wit% anot%er truc+ of%alf its mass mo-ing in opposite direction wit% -elocit .* m/s. f two truc+s couple3 t%eircommon -elocit would be:

(a) 62 m/s (b) 6# m/s(c) 6* m/s (d) 6& m/s


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Q * ! cur-ed road of & m radius is ban+ed at correct angle for a gi-en speed. f t%e speed isto be doubled +eeping t%e same ban+ing angle3 t%e radius of cur-ature of t%e road s%ould bec%anged to :

(a) 2& m (b) 1 m(c) 1& m (d) 2 m

Q & ,%e bob of a simple pendulum of lengt% 1 6 2 m %as a -elocit of 5 m/s w%en it is at t%elowest point. ,%e bob would lea-e t%e circular pat% abo-e t%e centre at a %eig%t :

(a) 1 6 m (b) 6 5 m(c) 6 &2 m (d) 6 &12 m

Q 0%en a s%ell tra-elling along a parabolic pat% is t%e gra-itational field explodes in t%emid air3 t%e centre of mass of fragments will continue to mo-e :

(a) -erticall down (b) along t%e original parabolic pat%(c) -erticall up and t%en -erticall down(d) %ori>ontall followed b parabolic pat%

Q 5 f t%e resultant of all external forces is >ero3 t%en -elocit of centre of mass will be :

(a) >ero (b) constant(c) eit%er (a) or (b) (d) neit%er (a) nor (b)

Q ,wo bodies of masses 2 +g and * +g are mo-ing wit% -elocities 2 m/s and 1 m/stowards eac%ot%er due to mutual gra-itational attraction. 0%at is t%e -elocit of t%eir centre of

mass

(a) & 6 # m/s (b) 6 * m/s(c) >ero (d) 6 1 m/s

Q ' ,%e ratio of angular momentum of eart% for its orbital motion and its dail rotation is :

(a) muc% greater t%an 1 (b) smaller t%an 1(c) eontal plane. ts total 9.$. is 1& . 0%at is itstranslational 9.$.

(a) 2 (b) 1 (c) 12& (d) none of t%ese

Q 51 n a circular motion t%e angle between a particleEs linear momentum and its angularmoment is :

(a) o (b) *&o

(c) 'o (d) 1o

Q 52 ! solid sp%ere rolls down two different inclined planes of same %eig%t3 but of differentinclinations. n bot% cases :


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(a) speed and time of descent will be same(b) speed will be same3 but time of descent will be different(c) speed will be different3 but time of descent will be same(d) speed and time of descent bot% are different

Q 5# ! clinder of %eig%t % is placed on an inclined plane3 t%e angle of inclination of w%ic% isslowl increased. t begins to slip w%en angle of inclination is *&o. 0%at is t%e radius of t%eclinder

(a) % (b) %/*(c) %/2 (d) # %/*

Q 5* ! small ball describes a %ori>ontal circle on t%e smoot% inner surface of a conical funnel.f t%e %eig%t of t%e plane of t%e circle abo-e t%e -ertex b 1 cm3 w%at is t%e speed of t%e

particle:

(a) 2 m/s (b) * m/s(c) 1 m/s (d) 1 m/s

Q 5& ! circular ring of wire of mass .& +g and radius 2.& m is rotating in its own plane abouta perpendicular axis passing t%roug% its centre wit% a constant angular speed of 1 rps. ,%etension produced in t%e ring will be :

(a) & x 1# (b) 1*(c) 5& (d) none of t%ese

Q 5 f t%e distance between t%e sun and t%e eart% is increased b t%ree times t%en attractionbetween two will :

(a) remains constant (b) decrease b #7(c) decrease b #7 (d) decrease b '7

Q 55 ,%e radius of t%e $art% is about * +m and t%at of t%e Mars is #2 +m. ,%e mass oft%e $art% is about 1 times t%e mass of t%e Mars. !n object weig%s 2 on t%e surface of$art%3 its weig%t on t%e surface of Mars will be :

(a) (b) 2

(c) * (d)

Q 5 ,wo sp%erical planets ! and A %a-e same mass but densities in t%e ratio : 1. ;or t%eseplanets3 t%e ratio of acceleration due to gra-it at t%e surface of ! to its -alue at t%e surface of Ais :

(a) 1 : * (b) 1 : 2(c) * : 1 (d) : 1


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Q 5' !t a distance #2 +m abo-e t%e surface of eart%3 t%e -alue of acceleration due to gra-itwill be lower t%an its -alue on t%e surface of t%e eart% b nearl (radius of eart% F * +m) :

(a) 27 (b) 7(c) 17 (d) 1*7

Q ! mass m is placed at a point A in t%e gra-itational field of mass M. 0%en t%e mass m isbroug%t from A to near point !3 its gra-itational potential energ will :

(a) remains unc%anged (b) increase(c) decrease (d) become >ero

Q 1 0eig%tlessness experienced w%ile orbiting t%e eart%3 in space s%ips3 is t%e result of :

(a) nertia (b) !cceleration(c) Iero gra-it (d) Jentre of gra-it

Q 2 A w%at minimum percentage s%ould orbital -elocit of moon be increased so t%at itdeparts fore-er

(a) 17 (b) &7(c) *1.*7 (d) none of t%e abo-e

Q # A w%at percent t%e energ of a satellite %as to be increased to s%ift it from an orbit ofradius r to # r :

(a) 22.#7 (b) ##.#7

(c) .57 (d) 17Q * ,wo pieces of wire ! and A of t%e same material %a-e t%eir lengt%s in t%e ratio 1 : 23 andt%eir diameters are in t%e ratio 2 : 1. f t%e are stretc%ed b t%e same force3 t%eir elongationswill be in t%e ratio :

(a) 2 : 1 (b) 1 : *(c) 1 : (d) : 1

Q & ,%e KoungEs modulus of a perfectl rigid bod is :

(a) unit (b) >ero(c) infinit (d) some finite non@>ero constant

Q ! cube is subjected to a uniform -olume compression. f t%e side of t%e cube decreasesb 273 t%e bul+ strain is :

(a) .2 (b) .#(c) .* (d) .


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Q 5 n case of rubber band t%e wor+done b it in returning to its original s%ape :

(a) is less t%an t%e wor+ re


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Q '& ! liero (b) less t%an '(c) more t%an ' (d) '

Q ' !t w%ic% of t%e following temperatures3 t%e -alue of surface tension of water is

minimum

(a) *J (b) 2&J(c) &J (d) 5&J

Q '5 ,wo %ail stones wit% radii in t%e ratio of 1 : 2 fall from a great %eig%t t%roug% t%eatmosp%ere. ,%en t%e ratio of t%eir momenta after t%e %a-e attained terminal -elocit is :

(a) 1 : 1 (b) 1 : *(c) 1 : 1 (d) 1 : #2

Q ' ;or flow of a fluid to be turbulent :

(a) ;luid s%ould %a-e %ig% densit(b) Jritical -elocit s%ould be large(c) Lenold number s%ould be less t%an 2(d) all t%e abo-e

Q '' ! clindrical -essel is filled wit% e


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Q1*. Joefficient of cubical expansion of water is minimum at :

(a) J (b) *J(c) 1&.&J (d) 1J

Q1&. ,wo rods ! and A of t%e same lengt% and radius are joined toget%er. ,%e t%ermal

conducti-it of ! and A are 2 9 and 93 if t%e temperature difference between t%e open ends of !and A is #J3 t%e temperature across ! is :

(a) 12J (b) 1J(c) 2*J (d) 'J

Q1. ,%e ratio of t%ermal conducti-it of two rods of different materials is & : *. ,%e two rodsof same area of cross section and same t%ermal resistance will %a-e t%e lengt%s in t%e ratio :

(a) & : * (b) 1 : '(c) ' : 1 (d) * : &

Q15. ,%e temperature of a blac+ bod is increased b &73 t%en t%e percentage of increase ofradiation is approximatel :

(a) 17 (b) 2&7(c) *7 (d) &7

Q1. f temperature of a blac+ bod increases from 5J to 25J3 t%en t%e rate of energradiation increases b :

(a) (25/5)

*

(b) 1(c) * (d) 2Q1'. ;our sp%eres !3 A3 J and C of different metals but of same radius are +ept at sametemperature. ,%e ratio of t%eir densities is 2 : # : & : 1. f specific %eats of t%eir materials are int%e ratio # : : 2 : *3 w%ic% sp%ere will s%ow initiall t%e fastest rate of cooling :

(a) C (b) J(c) A (d) !

Q11. ,%e temperature of a room %eated b a %eater is 2J3 w%en outside temperature is

2

J3 and it is 1

J3 w%en t%e outside temperature is *

J3 . ,%e temperature of %eater is :

(a) J (b) *J(c) J (d) 1J

Q111. ;or a gram@molecule of a gas3 t%e -alue of t%e constant L in t%e e


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Q112. 0%en a gas filled in a closed -essel is %eated t%roug% 1J3 its pressure increased b.*7. ,%e initial temperature of t%e gas was :

(a) 2& 9 (b) 2& 9 (c) 2&J (d) 2&J

Q11#. ,%e r.m.s. -elocit of gas molecules is #m/sec. ,%e r.m.s. -elocit of molecules of gaswit% twice t%e molecular weig%t and %alf t%e absolute temperature is :

(a) # m/sec (b) m/sec(c) 5& m/sec (d) 1& m/sec

Q11*. f t%e pressure in a closed -essel is reduced b drawing out some gas3 t%e mean@free pat%of t%e molecules :

(a) is decreased (b) is increased(c) remains unc%anged(d) increases or decreases according to t%e nature of t%e gas.

Q11&. !t a certain temperature3 t%e ratio of t%e rms -elocit of 82molecules to =2 molecule is :

(a) 1 : 1 (b) 1 : *(c) * : 1 (d) 1 : 1

Q11. 0%at is t%e degree of freedom in case of a monoatomic gas

(a) 1 (b) #

(c) * (d) &Q115. ,%e molecules of monoatomic gas do onl :

(a) translational motion (b) -ibrational motion(c) rotational motion (d) all of t%ese

Q11. $


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Q1#. f pressure and temperature of an ideal gas are doubled and -olume is %al-ed3 t%e numberof molecules of t%e gas:

(a) become %alf (b) become two times(c) become * times (d) remain constant

Q1#1. ,wo gram of %elium is enclosed in a -essel at ,H. 8ow muc% %eat s%ould be gi-en to itto double t%e pressure. Dpecific %eat of 8e is # joule/g 9.

(a) 1# (b) 1 (c) (d) 1' .

Q1#2. ,wo simple pendulums of lengt% 1 cm and 1 cm are in p%ase at t%e mean positionat a certain instant of time. f , is t%e time period of first pendulum3 t%en t%e minimum timeafter w%ic% t%e will be in p%ase again is :

(a) # , / * (b) * , / #

(c) # , / 2 (d) * ,

Q1##. ! particle executes D.8.M. ,%en t%e grap% of -elocit as a function of displacement is :

(a) a straig%t line (b) a circle(c) an ellipse (d) a %perbola

Q1#*. ! particle executes D.8.M. along a straig%t line so t%at its period is 12 sec. ,%e time itta+es in tra-ersing a distance e


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Q1*5. ! w%istle gi-ing out *& 8> approac%es a stationar obser-er at a speed of ## m / s. ,%efre is P-elocit of sound in air F ### ms"1 :(a) *' (b) *2'(c) &15 (d) &

Q1*. ,wo uniform strings ! and A made of steel are made to -ibrate under t%e same tension.f t%e first o-ertone of ! is e


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Q1&&. 0%ic% of t%e following numerical -alue %a-e t%ree significant figures

(a) #.## (b) .#(c) #.# (d) .#

Q1&. ,%e correct order in w%ic% t%e dimensions of time decreases in t%e following p%sical

ontal. ! 1& +g weig%t is attac%ed to t%e rope at t%e mid point3 w%ic% is now no longer%ori>ontal. ,%e minimum tension re


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Q1#. ! bod released from t%e top of a tower falls t%roug% %alf t%e %eig%t of t%e tower in #seconds. t will reac% t%e ground after nearl

(a) #.& sec (b) *.2* sec(c) *.51 sec (d) sec

Q1*. ! man t%rows balls into t%e air one after t%e ot%er3 t%rowing one w%en ot%er is at t%e%ig%est point. 8ow %ig% t%e balls rise if %e t%rows twice a second:

(a) 2.*& m (b) 1.2& m(c) 1'. m (d) *.' m

Q1&. ! bod mo-ing wit% uniform acceleration describes 12 metre in t%e t%ird second of t%emotion and 2 metre in t%e fift% second. ;ind t%e -elocit after 1t% sec

(a) * m/s (b) *2 m/s

(c) &2 m/s (d) * m/s

Q1. !cceleration due to gra-it on moon is 1. m/sec2. !n inflated balloon is released onmoon. t will :

(a) mo-e down wit% acceleration 1. m/s2

(b) mo-e up wit% acceleration 1. m/s2

(c) mo-e up wit% acceleration '. m/s2

(d) mo-e down wit% acceleration '. m/s2

Q15. ! particle mo-ing wit% a uniform acceleration tra-els 2* m and * m in t%e first two

consecuti-e inter-als of * sec eac%. ts initial -elocit is :(a) 1 m/sec (b) 1 m/sec(c) & m/sec (d) 2 m/sec

Q1. ,wo particles ! and A get *m closer eac% second w%ile tra-elling in opposite direction.,%e get .*m closer e-er second w%ile tra-elling in same direction. ,%e speeds of ! and Aare respecti-el:

(a) 2.2 m/sec and .* m/sec(b) 2.2 m/sec and 1. m/sec

(c) * m/sec and .* m/sec(d) none of t%ese

Q1'. 0ind is blowing west to east along two parallel trac+s. ,wo trains mo-ing wit% samespeed in opposite directions %a-e t%e stream trac+ of one double t%an ot%er. ,%e speed of eac%train is :

(a) e


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Q15. ! 12 m long train is mo-ing in a direction wit% speed 2 m/s. ! train A mo-ing wit% #m/s in t%e opposite direction and 1# m long crosses t%e first train in a time :

(a) s (b) # s(c) # s (d) none of t%ese

Q151. ! bod is projected %ori>ontall wit% speed 2 m/s from top of a tower. 0%at will be itsspeed nearl after & sec ,a+e g F 1 m / s2

(a) &* m/s (b) 2 m/s(c) & m/s (d) 5 m/s

Q152. !n aeroplane in a le-el flig%t at 1** +m/% is at an altitude of 1 m. 8ow far from agi-en target s%ould a bod be released to %it t%e target

(a) &51.*# m (b) 51.*# m(c) #51.*# m (d) *51.*# m

Q15#. n a projectile motion3 t%e -elocit :

(a) is ne-er perpendicular to t%e acceleration(b) is alwas perpendicular to t%e acceleration(c) is perpendicular to acceleration at one instant onl(d) is perpendicular to acceleration at two instants

Q15*. ,%e maximum %eig%t attained b a projectile is found to be eontalrange. ,%e angle of projection of t%is projectile is :

(a) # (b) *&

(c) (d) 5&

Q15&. ,%e range of projectile fired at an angle of 1&is &m. f it is fired wit% t%e same speedat an angle of 3 its range will be :

(a) #& m (b) & m(c) 5 m (d) 1 m

Q15. Latio of minimum +inetic energies of two projectiles of same mass is * : 1. ,%e ratio oft%e maximum %eig%t attained b t%em is also * : 1. ,%e ratio of t%eir ranges would be :

(a) 2 : 1 (b) * : 1(c) : 1 (d) 1 : 1

Q155. ! +ite of mass m is s+illfull %eld stationar in t%e s+. ,%e net force on t%e +ite is :

(a) >ero (b) mg(c) "mg (d) none of t%e abo-e


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Q15. !n impulse is applied to a mo-ing object at an angle of 12wit% respect to t%e -elocit-ector. ,%e angle between impulse -ector and c%ange in momentum -ector is :

(a) (b)

(c) 12 (d) '

Q15'. ,%e a-erage force necessar to stop a %ammer wit% 2&@s momentum in .& s is :

(a) & (b) 12& (c) & (d) 2&

Q1. ! stretc%ing force of 1 is applied at one end of a spring balance and an e>le -elocit will be :

(a) # +m/min (b) +m/min(c) # m/s (d) & m/s

Q12. n a tug of war3 two opposite teams are pulling t%e rope wit% an e


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Q1. ! box is dragged across a floor b a rope w%ic% ma+es an angle of *& wit% t%e%ori>ontal. ,%e tension in t%e rope is 1 w%ile t%e box is dragged 1 m. ,%e wor+ done is :

(a) 5.1 (b) 55.1 (c) 1*1*.2 (d) '

Q15. ,%e H.$. and 9$ of a %elicopter fling %ori>ontall at a %eig%t * m are in t%e ratio& : 2. ,%e -elocit of %elicopter is :

(a) 2 m/s (b) 1* m/s(c) & m/s (d) # m/s

Q1. ! coconut of mass 1. +g falls to eart% from a %eig%t of 1 m. ,%e +inetic energ of t%ecoconut3 w%en it is * m abo-e t%e ground is :

(a) .& joule (b) &. joule(c) &. joule (d) & joule

Q1'. f t%e linear momentum is increased b &73 t%e +inetic energ will increase b :

(a) &7 (b) 17(c) 12&7 (d) 17

Q1'. 1 amu of mass is e


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Q1'&. ,%e speed of re-olution of a particle going around a circle is doubled and its angularspeed is %al-ed. 0%at %appens to t%e centripetal acceleration

(a) Aecomes four times (b) Coubled(c) 8al-ed (d) Lemains unc%anged

Q1'. ! particle is mo-ing along a circular pat% wit% a uniform speed. 8ow does its angular-elocit c%ange w%en it completes %alf of t%e circular pat%

(a) o c%ange (b) increases(c) decreases (d) cannot sa

Q1'5. ! particle performing uniform circular motion %as :

(a) a radial -elocit and radial acceleration(b) a radial -elocit and trans-erse acceleration(c) trans-erse -elocit and radial acceleration(d) trans-erse -elocit and trans-erse acceleration

Q1'. 0%en a bod mo-es wit% a constant speed along a circle :

(a) its -elocit remains constant(b) no force acts on it(c) no wor+ is done on it(d) no acceleration is produced in it

Q1''. !n object of mass & +g is w%irled round in a -ertical circle of radius 2 m wit% a constantspeed of m/s. ,%e maximum tension in t%e string is :

(a) 1&2 (b) 1#' (c) 121 (d) 1#

Q2. ! bod crosses t%e topmost point of a -ertical circle wit% critical speed. 0%at will be itsacceleration w%en t%e string is %ori>ontal

(a) g (b) 2 g

(c) # g (d) g

Q21. ! bod falling -erticall downwards under gra-it brea+s in two parts of uneontall(d) lies on t%e same -ertical line


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Q22. ,%e diameter of a flw%eel is increased b 17. ncrease in its moment of inertia aboutt%e central axis is :

(a) 17 (b) .&7(c) 27 (d) *7

Q2#. ,%e moment of inertia of a cube will be minimum about an axis w%ic% :

(a) is an edge of t%e cube (b) in a face diagonal(c) joins mid points of opposite faces (d) is a bod diagonal

Q2*. =f t%e two eggs w%ic% %a-e identical si>es3 s%apes and weig%ts3 one is raw3 and ot%er is%alf boiled. ,%e ratio between t%e moment of inertia of t%e raw to t%e %alf boiled egg aboutcentral axis is :

(a) one (b) greater t%an one(c) less t%an one (d) not comparable

Q2&. f a sp%ere is rolling3 t%e ratio of t%e translational energ to total +inetic energ is gi-enb :

(a) 5 : 1 (b) 2 : &(c) 1 : 5 (d) & : 5

Q2. !n engine de-elopes 1 +03 w%en rotating at 1 rpm. ,or


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Q211. ,%e unit of 4/g is :

(a) +g/m (b) +g/m2

(c) m2/+g (d) m/+g

Q212. f bot% t%e masses and radius of t%e eart%3 eac% decrease b &73 t%e acceleration due togra-it would :

(a) remain same (b) decrease b &7(c) decrease b 17 (d) increase b 17

Q21#. f t%e radius of t%e eart% were to s%rin+ b 17 its mass remaining same3 t%e accelerationdue to gra-it on t%e eart%Es surface would :

(a) decrease b 27 (b) remain unc%anged

(c) increase b 27 (d) become >eroQ21*. !t w%at %eig%t in +m o-er t%e eart%Es pole t%e free fall acceleration decreases b one

percent (!ssume t%e radius of t%e eart% to be * +m).

(a) #2 (b) *(c) (d) 162

Q21&. 0%at will be t%e effect on t%e weig%t of a bod placed on t%e surface of eart% suddenlstarts rotating wit% %alf of its angular -elocit of rotation:

(a) no effect (b) weig%t will increase(c) weig%t will decrease (d) weig%t will become >eroQ21. ,%e Ladii of t%e circular orbits of two satellites around t%e eart% are in t%e ratio 1 : * t%ent%e ratio of t%eir respecti-e periods of re-olution is :

(a) 1 : * (b) * : 1(c) 1 : (d) : 1

Q215. ! cube is subjected to a uniform -olume compression. f t%e side of t%e cube decreasesb 173 t%e bul+ strain is :

(a) .1 (b) .2(c) .# (d) .

Q21. ;our wires3 identical in all respect are subjected to t%e same longitudinal stress. ,%eirelongation is gi-en in order below. 4uess w%ic% one %as t%e %ig%est KoungEs modulus ofelasticit.

(a) .1& cm (b) .1&2 cm(c) .1 cm (d) .155 cm


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Q21'. ,wo wires of t%e same material and lengt% but diameter in t%e ratio 1 : 2 are stretc%ed bt%e same force. ,%e ratio of potential energ per unit -olume for t%e two wires w%en stretc%edwill be :

(a) 1 : 1 (b) 2 : 1(c) * : 1 (d) 1 : 1

Q22. ,%e substance w%ic% s%ows practicall no elastic after effect is :

(a) Jopper (b) Lubber (c) Quart> (d) !ll of t%ese

Q221. ! parrot sitting on t%e floor of a wire cage w%ic% is being carried b a bo3 starts fling.,%e bo will feel t%at t%e box is now:

(a) %ea-ier (b) lig%ter (c) s%ows no c%ange in weig%t

(d) lig%ter in t%e beginning and %ea-ier later.

Q222. ,%e %eig%t of a barometer filled wit% a li


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Q225. 0%ic% one of t%e following would raise t%e temperature of 2 gram of water at #Jmost w%en mixed wit%:

(a) 2 gram of water at *J (b) * gram of water at #&J(c) 1 gram of water at &J (d) * gram of water at J

Q22. ,%e amount of mec%anical wor+ to be done to completel melt one gram of ice at J is:

(a) *62 joule (b) joule(c) *2 joule (d) ## joule

Q22'. ,wo metal role ! and A are %a-ing t%eir initial lengt% in t%e ratio 2 : # and t%ecoefficients of linear expansion in t%e ratio # : *. 0%en t%e are %eated t%roug% t%e sametemperature differences3 t%e ratio of t%eir linear expansion is :

(a) # : * (b) 1 : 2(c) 2 : # (d) * : #

Q2#. n a pressure coo+er3 coo+ing is faster because t%e increase of -apour pressure:

(a) increases sp. %eat (b) decreases sp. %eat(c) decreases t%e boiling point (d) increases t%e boiling point

Q2#1. ! real gas be%a-es as an ideal gas :

(a) at -er low pressure and %ig% temperature(b) %ig% pressure and low temperature

(c) %ig% pressure and %ig% temperature(d) low pressure and low temperature

Q2#2. ,%e molar gas constant is t%e same for all gases because at t%e same temperature andpressure e


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Q2#. !n ideal gas ! and a real gas A %a-e t%eir -olumes increased from N to 2 N underisot%ermal conditions. ,%e increase in internal energ :

(a) of ! will be more t%an A (b) of ! will be less t%an A(c) will be same in bot% cases (d) will be >ero in bot% cases

Q2#5. !ir in a clinder is suddenl compressed b a piston3 w%ic% is t%en maintained at t%esame position. 0it% t%e passage of time :

(a) t%e pressure increases(b) t%e pressure ma increase or decrease(c) t%e pressure remain t%e same(d) t%e pressure decreases

Q2#. ! Jarnot engine %as t%e same efficienc between 9 to & 9 andx9 to 9. ,%e-alue ofxis :

(a) 1 9 (b) ' 9(c) * 9 (d) 5&* 9

Q2#'. ;our engines are wor+ing between :

(a) 1 93 9 (b) * 93 2 9(c) 93 * 9 (d) 12 93 1 9w%ic% one %as maximum efficienc

Q2*. ,%e coefficient of performance of a refrigerator wor+ing between 1J and 2J is :

(a) 26# (b) 2'6#(c) 2 (d) cannot be calculated

Q2*1. ,wo pendulums of lengt%s 121 cm and 1 cm start -ibrating. !t same instant t%e twoare in t%e mean position in t%e same p%ase. !fter %ow man -ibrations of t%e s%orter pendulum3t%e two will be in p%ase in t%e mean position:

(a) 1 (b) 11(c) 2 (d) 21

Q2*2. ! particle executes D.8.M. %a-ing time period ,. ,%en t%e time period wit% w%ic% t%epotential energ c%anges is :

(a) , (b) 2 ,(c) ,/2 (d) R

Q2*#. 0%en t%e displacement is %alf of t%e amplitude3 t%en w%eat fraction of t%e total energ ofa simple %armonic oscillator is +inetic

(a) 2/5t% (b) #/*t%(c) 2/'t% (d) &/5t%


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Q2**. 0%en a force of 61 is applied3 t%e spring is stretc%ed b 16& cm. ,%e spring is cut intot%ree parts and one part is stretc%ed b # cm.3 t%e force re


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25#. *&o conducting s%here of radii r1 and r2 are at the same%otential. *he ratio of their charges is

(a) r2"1" r2"2 (b) r2"2" r2"1(b) r1" r2 (d) r2" r1

254. *&o insulated metal s%hers of radii 10 cm and 15 cmcharged to a %otential of 150 + and 100 + res%ecti'ely areconnected by means of a metallic &ire. hat is the charge on the-rst s%here

(a) 2 e.s.u. (b) 4 e.s.u(b) 6 e.s.u. (d) / e.s.u.

255. n small dro%s of same are charged to + 'olt each. If they

coalesce to form a single large dro%, then it %otential &ill be(a) +n (b) +n1

( c) +n1"# (d) +n2"#

256. *he electric %otential at the surface of an atomic nucleus (50) of radius of x1015mis

(a) /0 + (b) /3106+( c) + (d) x105+

25. *he .I. unit of the line integral of electrical -eld is(a) !1 (b) m2!1

( c) !1 (d) + m1

25/. *he electric %otential + is gi'en as a function of distance x(meter) by + (5x2710x4) 'olt. +alue of electric -eld at x 1 mis

(a) 2#+"m (b) 11+"m( c) 6 +"m (d) 20+"m

25. *&o free %rotons are se%arated by a distance of 1 8. If theyare released, the 9inetic energy of each %roton &hen at in-nitese%aration is

(a) 11.5 x 101 (b) 2#x101( c) 46x101 (d) 5.6x1012

260. $ uniform electric -eld ha'ing a magnitude :oand directionalong the %ositi'e 3axis exists. If the %otential + is ;ero at 30,then its 'alue at x 7 x &ill be

(a) + (x) 7 x :0 (b) + (x) x :0( c) + (x) 7 x2 :0 (d) + (x) x2 :0


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261. $ ball of mass 1g carrying charge 10/ ! mo'es from a %oint$ at %otential 600 + to a %oint < at ;ero %otential. *he change inits =.:. is

(a) 6x106erg (b) 6x106

( c) 6x106

(d) 6x106

erg.

262. >otential energy of t&o e?ual negati'e %oint charges 2 !each held 1 ma%art in air is

(a) 2 (b) 2 e+( c) 4 (d) 0.0#6 .

26#. $ s%here of radius 1 m encloses a charge of 5 !. $nothercharge of 5 ! is %laced inside the s%here. *he net electric @ux

&ould be(a) double (b) four times( c) ;ero (d) none of the abo'e

264. *he .I. unit of surface integral of electric -eld is(a) + Am (b) +

( c) !1m (d) !m#

265. *here is an air-lled 1 %B %arallel %late ca%acitor. hen the

%late se%aration is doubled and the s%ace is -lled &ith &ax, theca%acitance increase to 2%B. *he dielectric constant of &ax is(a) 2 (b) /

( c) 4 (d) 6

266. $ ca%acitor is charged to store an energy C. *he chargingbattery is disconnected. $n identical ca%acitor is no& connectedto the -rst ca%acitor in %arallel. *he energy in each of theca%acitor isS

(a) # C"2 (b) C( c) C"4 (d) C"2

26. $ %arallel %late air ca%acitor has a ca%acitance 1/ B. If thedistance bet&een the %lates is trebled and a dielectric medium isintroduced the ca%acitance becomes 2 B. *he dielectricconstant of the medium is( a) 4 (b) (c) 12 (d) 2


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25. *&o ca%acitors of e?ual ca%acities &hen connected in seriesha'e some resultant ca%acity. *hen they are connected in%arallel. *heir resultant ca%acity is

(a) same as %re'ious 'alue

(b) t&o times of %re'ious 'alue(c) three times of %re'ious 'alue(d) four times of %re'ious 'alue

26. *&o ca%acitors of # B and 6 B are connected in seriesacross a %otential diDerence of 120 +. *hen the %otentialdiDerence across # B ca%acitor is

(a) 50 + (b) 60 +(c ) 0 + (d) /0 +

2.Eo& many ca%acitors each of / B and 250 + are re?uiredto form a com%osite ca%acitor of 16 B F 1 9+(b) 16 (b) 64

(c ) / (d) #2

2/. *&o ca%acitors of 2 B and 4 B are connected in %arallel.$ third ca%acitor of 6 B is connected in series. *he combinationis connected across a 12 + battery. *he 'oltage across 2 Bca%acitor is

(a) 2 + (b) / +(c ) 6 + (d) 1 +

2. $ 10 B ca%acitor is charged to 500 + and then its %latesare Goined together through a resistance of 10 ohm. *he heat%roduced in the resistance is

(a) 500 (b) 125 (b) 250 (d) 1.25

2/0. 1000 similar electri-ed rain dro%s merge together into onedro% so that their total charge remains unchanged. Eo& is the:lectric energy aDected

(a) 100 times (b) 102 times(c ) 200 times (d) 400 times

2/1. *he %lates of a %arallel %late ca%acitor ha'e an area of 100cm2each and are se%arated by 2.5 mm. *he ca%acitor is chargedto 200 +. !alculate the energy stored in the ca%acitor

(a) 0./ x 1011 (b) 0x10(c ) .02 x 10 (d) .0/ x 10


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2/2. $ 2 B ca%acitor is charged to 100 + and then its %lates areconnected by a &ire. Eo& much heat &ill be %roduced

(a) I (b) 0.1 (c ) 0.01 (d) 0.001

2/#. *&o s%herical conductors each of ca%acity ! are charged to%otential + and A+. *hese are then connected by means of a -ne&ire. *he loss of energy is

(a) ero (b) H !+2

(c ) !+2 (d) 2 !+2

2/4. *he electric %otential at a %oint (x,y) in the xy%lane is gi'enby

+ = xy*he electric -eld intensity at a distance r from the origin 'aries

as (a) r2 (b) r(c ) 2r (d) 2r2

2/5. $ %arallel %late ca%acitor is connected to a battery. *he%lates are %ulled a%art &ith a uniform s%eed +. If 3 is these%aration bet&een the %lates, then the time rate of change ofthe electrostatic energy of the condenser is %ro%ortional to

(a) x2 (b) x

(c ) 1"x2

(d) 1"x2/6. $ small electric di%ole is %laced at origin &ith its di%olemoment directed along %ositi'e xaxis. *he direction of electric-eld at %oint (2, 22,0) is

(a) along negati'e ;axis(b) along ;axis(c) along negati'e yaxis(d) along %ositi'e yaxis

2/. $ ca%acitor is connected to a battery. *he force of attractionbet&een the %lates &hen the se%aration bet&een them is hal'ed

(a) becomes four times(b) becomes t&o times(c) becomes eight times(d) remains the same.

2//. $ charged %article of mass m and charge ? is released fromrest in an electric -eld of constant magnitude :. *he 9ineticenergy of the %article after a time t is

(a) 2 :2t2" m? (b) : ?2 m"2 t2


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(c ) :2 ?2 t2"2 m (d) : ? m"2 t.

2/. $ 4 B ca%acitor is charged by a 200 ' su%%ly. It is thendisconnected from the su%%ly and is connected to anotheruncharged 2 B ca%acitor. *he energy lost in the %rocess is

(a) # x 102

(b) #x102

( c) 2.6x102 (d) 2./x102.

20. $ free J %article and a free %roton, &hich are se%arated by adistance of 1010mare released. *he =.:. of J %article &hen atin-nite se%aration is

(a) 46 x 101 (b) 2# x 101

(c ) #6./ x 101

(d) .2 x 101

.

21. hen there is an electric current through a conducting &irealong its length, then an electric -eld must exist

(a) Kutside the &ire but %arallel to it(b) Kutside the &ire but %er%endicular to it(c) Inside the &ire but %arallel to it(d) Inside the &ire but %er%endicular to it

22. hich of the follo&ing characteristics of electron determinesthe current in a conductor(a) *hermal 'elocity alone(b) Lrift 'elocity alone(c)


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25. $ ca%acitor of 10 B has a %ot. diD. of 40 'olts across it. If itis discharged in 0.2 second, the a'erage current during dischargeis

(a) 2 m $ (b) 4 m $( c) 1 m $ (d) 0.5 m $

26. $ charge of 2 x 102 ! mo'es at #0 re'olutions %er second ina circle of diameter /0 cm. *he current lin9ed &ith the circuit is

(a) 0.02 $ (b) 20 $(c ) 0.60 $ (d) 60 $

2. !urrent @o&s through a metallic conductor &hose area ofcross section increases in the direction of the current. If &e mo'ein this direction,

(a) the carrier density &ill change(b) the current &ill change(c) the drift 'elocity &ill decrease(d) the drift 'elocity &ill increase

2/. *he amount of charge N %assed in time t through a crosssection of a &ire is N5 t 27# t 71. *he 'alue of current attime t 5 sis

(a) 9A (b) 49 A(c ) 53 A (d) none of the above

299. The length of a conductor is doubled. Its conductance will be(a) Unchanged (b) halved(c ) doubled (d) uadru!led

3"". A !ot diff. of 2" # is a!!lied across a conductance of $%. The current in theconductor is

(a) 2.5 A(b) 2$ A(c) &'" A

(d) one of the above.

3"&. If an increase in length of co!!er wire is ".5 due to stretching* the !ercentageincrease in its resistance will be

(a) ".& (b) ".2(c ) & (d) 2

3"2. & +g !iece of co!!er is drawn into a wire & ,, thic+ and another !iece intoa wire 2 ,, thic+. -o,!are the resistance of these wires

(a) 2& (b) 4&(c ) $& (d) &'&

3"3. A resistor of 2" c, length and resistance 5 oh, is stretched to a unifor, wire of4" c, length. The resistance now is


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(a) &" oh, (b) 5 oh,(c ) 2" oh, (d) 2"" oh,

3"4. -onductivit/ of a conductor de!ends u!on(a) length (b) area of cross section

(c ) volu,e (d) te,!erature

3"5. The te,!erature coefficient of resistance for a wire is ".""&250-1&. At 3"" itsresistance is & oh,. The te,!erature at which the resistance beco,es &.5 oh, is

(a) 45" (b) 2 (b) 454 (d) 9""

3"'. The euivalent resistance of networ+ of three 2 resistors can not be(a) ".' (b) 2 (b) 3 (d) '

3". The least nu,ber of cells each of e.,.f. 2.& volt and internal resistance ".525

oh, to !roduce a current of ' a,!ere in an eternal resistance ". oh, will be(a) 3 (b) '(b) $ (d) &2

3"$. The length of a !otentio,eter wire is 5 ,eters. An electron in this wiree!erience a force of 4.$ &"1&9 newton* e.,.f. of the ,ain cell used in !otentio,eter is

(a) 3 volt (b) &5 volt(b) &.5 volt (d) 5 volt

3"9. A cell of e.,.f. 6 and internal resistance r is connected in series with an eternalresistance nr. Then the ratio of the ter,inal !otential difference to e.,.f. of cell is

(a) (&7n) (b) &7(n8&)(b) n7(n8&) (d) (n8&)7n

3&". The length of a !otentio,eter wire is . A cell of e,f 6 is balanced at a length 75 fro, the !ositive end of the wire. If length of the wire is increased b/ 72. At whatdistance will the sa,e cell give a balance !oint.

(a) 27&5 (b) 37&5 (b) 37&" (d) 47&"

3&&. All the edges with !arallel faces are uneual. Its longest edge is thrice its

shortage edge. The ratio of the ,ai,u, to ,ini,u, resistance between !arallelfaces is(a) $ (b) 9(b) 3 (d) none of the above

3&2. An electric current of 5 A is !assing through a circuit containing three wiresarranged in !arallel. If the length and radius of the wires are in the ratio 234 and345* then the ratio of current !assing through wires would be

(a) 3'&" (b) 49&'(b) 9&'25 (d) 54'45

3&3. A &"" # volt,eter having an internal resistance of 2" + . :hen connected in

series with a large resistance ; across a &&" # line reads 5 #. The ,agnitude ofresistance ; is

(a) 2&" + (b) 3&" +


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41/70

#2#. ! %eater of 22 N %eats a -olume of water is & minutes time. ! %eater of11 N %eats t%e same -olume of water in

(a) 5 minutes (b) / minutes(c ) 10 minutes (d) 20 minutes

#2*. ,%e e.m.f. of t%e batter in a t%ermocouple is doubled. ,%e rate of %eatgenerated at one of t%e two junctions will

(a) remain unc%anged (b) become %alf(c ) be doubled (d) be four times.

#2&. ,%e temperature of %ot junction of a t%ermocouple c%anges from OJ to1OJ3 t%e percentage c%ange in t%ermoelectric power is

(a) 25P (b) 20P

(c ) 10P (d) /P#2. ,o liberate two litre of %drogen at 22.* atmosp%ere from acidulated watert%e


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(d) remains unchanged

##1. ! uniform electric field and a uniform magnetic field are pointed in t%esame direction. f an electron is projected in t%e same direction3 t%e electron

(a) 'elocity &ill increase in magnitude

(b) 'elocity &ill decrease in magnitude(c) &ill turn to its left(d) &ill turn to its right

##2. magine t%at ou are seated in a room and t%ere is a uniform magnetic fieldpointing -erticall downwards in its. !t t%e centre of t%e room3 an electron isprojected %ori>ontall wit% a certain speed. Ciscuss t%e speed and t%e pat% of t%eelectron in t%is field.

(a) electron mo'es in anticloc9&ise %ath

(b) electron mo'es in cloc9&ise %ath(c) electron mo'es left &ards(d) electron mo'es right &ards.

###. !n electron %a-ing a c%arge e mo-es wit% a -elocit - in T@direction. !nelectric field acts on it in K@direction. ,%e force on t%e electron acts in

(a) %ositi'e direction Uaxis(b) negati'e direction of Uaxis(c) %ositi'e direction of axis

(d) negati'e direction of axis##*. ! cclotron is accelerating proton3 w%ere t%e applied magnetic field is 2 ,3t%e potential gap is 1 9N3 t%en %ow muc% turn t%e proton %as to more betweent%e dees to ac


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#*&. ! -ibration magnetometer is placed at Dout% pole3 t%en t%e time period willbe

(a) ;ero

(b) in-nity(c) same as at magnetic e?uator(d) same at any other %lace on earth

#*. ,%e unit of magnetic permeabilit is(a) $ m1 (b) $ m2(b) E (d) E m1

#*5. ,%e period of oscillations of a magnet is 2 sec. 0%en it is magneti>ed so

t%at t%e pole strengt% is * times3 its period will be(a) 4 sec (b) 1 sec(b) 2 sec (d) 1"2 sec

#*. ,%e mass of a specimen of a ferromagnetic material is . +g and itsdensit is 5. x 1#+g/m#. f t%e area of %stersis loop of alternating magnetisingfield of fre is .552 M9D units3 t%en t%e %steresis loss second willbe

(a) 2. x 105Goule(b) 2. x 106Goule(c) 2. x 104Goule(d) 2. x 104Goule

#*'. ,%e correct measure of magnetic %ardness of a material is(a) Yemanant magnetism(b) Eystersis loss(c) !oerci'ity(d) !urie tem%erature

#&. ;orce between two identical s%ort bar magnets w%ose centers are r metreapart is .1 3 w%en t%eir axes are along t%e same line. f separation is increasedto #rand t%e axis are rearranged perpendicularl3 t%e force between t%em wouldbecome

(a) 2.4 (b) 1.2 (b) 0.1 (d) 0.15

#&1. ,%e magnetic potential at a point distant 1 cm from t%e middle point of amagnetic dipole on a line inclined at Owit% t%e axis is # J4D units (e.m.u).

,%en t%e magnetic moment of t%e magnet is(a) #00 abam% cm2 (b) #0 abam% cm2


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(b) 600 abam% cm2 (d) 60 abam% cm2

#&2. ,%e susceptibilit of a paramagnetic material is 9 at 25 OJ. !t w%attemperature will its susceptibilit be 9/2

(a) 600 O! (b) 2/ O!

(c ) &* OJ (d) #25 OJ

#. ! magnet ma+es & oscillations per minute in A F .# x 1@* ,. A w%atamount s%ould t%e field be increased so t%at number of oscillations is 1 in t%esame time

(a) 0.# x 104* (b) 0.6 x 104*(c ) .' x 1@* , (d) 1.2 x 1@* ,

#&*. ,%e wing span of an aeroplane is # m. f t%e plane is fling at * +m/%3

t%e e.m.f. induced between t%e wings tips is (assume N F *T1@&

,)(a) 16+ (b) 1.6 + (c) 0.16 + (d) 0.016 +.

#&&. ! two meter wire is mo-ing wit% a -elocit of 1 m/s perpendicular to amagnetic field of .& 0%/m2. ,%e e.m.f. enduced in it will be

(a) 0.5+ (b) 0.1 + (c) 1 + (d) 2 +.

#&. =ne tesla is eed in t%e construction of t%emout% piece of a telep%one now a das

(a) *hermo electric eDect(b) >hoto electric eDect(c) !hange of resistance &ith %ressure(d) :lectromagnetic induction.

#&'. 0%en t%e rate of c%ange of current is unit3 induced e.m.f. is e


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(c ) 2 $ (d) 2 2 $.

#6. $lternating 'oltage + 400 sin (500 V t) is a%%lied acrossa resistance of 0.2 9 W. *he r.m.s. 'alue of current &ill be e?ualto

(a) 1*.1* ! (b) 1.*1* !(c) 0.1414 $ (d) 2.0 $

#. !n a.c. source is of 12 -olt3 8>. ,%e -alue of t%e -oltage after 1/#sec. from t%e start will be(a) 1*.* -olt (b) *2.* -olt(c) 1. -olt (d) 2.2 -olt

#'. ,%e effecti-e -alue of an alternating current is &!. ,%e current passes

t%roug% 2* resister. ,%e maximum potential difference across t%e resistor is(a) 1 N (b) 15 N (c) 15 N (d) 15 N

#5. n an !.J. circuit3 maximum -alue of -oltage is *2# -olt. ts effecti-e-oltage is

(a) #2# N (b) #* N (c) * N (d) # N

#51. n t%e non resonant circuit3 w%at will be t%e nature of t%e circuit forfre


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(c ) 1/W2 N (d) depends on t%e p%ase angle betweenN and .

#5. ,%e energ stored in a & m8 inductor carring a current of *! will be(a) .* (b) *.

(c ) . (d) .*

#55. !n !J ammeter is used to measure current in a circuit. 0%en a gi-en directcurrent passes t%roug% t%e circuit. !J ammeter rends # ampere. 0%en anot%eralternating current passes t%roug% t%e circuit3 t%e !J ammeter reads * ampere.

,%en t%e reading of t%is ammeter if CJ and !J flows t%roug% t%e circuitsimultaneousl is(a) # ampere (b) * ampere

(c ) 5 ampere (d) & ampere

#5. ! current of 2 ! is increasing at a rate of * !/s t%roug% a coil of inductance2 8. ,%e energ stored in t%e inductor per unit time is

(a) 1 /s(b) * /s(c) 2 /s(d) 1 /s

#5'. Jonduction current flows(a) onl t%roug% resistance(b)t%roug% wires and resistance(c) onl t%roug% capacitor(d)t%roug% wires resistance and capacitance.

#. ,%e conduction current is same as displacement current w%en source is

(a) a. c. onl (b) d. c. onl(c ) bot% a. c. and d. c. (d) neit%er for d. c. nor for a. c.

#1. !ccording to MaxwellEs %pot%esis3 a c%anging electric field gi-es rise to(a) an e.m.f. (b) electric current(c ) magnetic field (d) pressure radiant.

#2. ,%e electromagnetic wa-es(a) tra-el wit% t%e speed of sound

(b)tra-el wit% t%e same speed in all media(c) tra-el in free space wit% t%e speed of lig%t(d)do not tra-el t%roug% a medium


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##. f a free electron is placed in t%e pat% of a plane electromagnetic wa-e3 itwill start mo-ing along

(a) center of eart% (b) eonosp%ere

(c ) onosp%ere (d) troposp%ere

#5. Dome scientists %a-e predicted t%at a global nuclear war on t%e eart% wouldbe followed b a se-ere

(a) rain (b) winter(c ) summer (d) radiations %ill ras

#. ong distance radio broadcasts use s%ort wa-e bands became(a) t%e %a-e s%ort wa-elengt%(b) t%e scatter less(c) t%e are reflected b ionosp%ere(d)t%e %a-e more energ to propagate.

#'. ,%e magnetic field between t%e plates of radius 12 cm separated b distanceof * mm of a parallel plate capacitor of capacitance 1 p; along t%e axis of plates%a-ing conduction current of .1& ! is

(a) >ero (b) 1.& ,(c ) 1& , (d) .1& ,

#0. :lectric -elds induced by changing magnetic -elds are(a) conser-ati-e(b) non@conser-ati-e

(c ) ma be conser-ati-e or non@conser-ati-e depending on t%e conditions(d)not%ing can be said


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#'1. =ut of t%e following of w%ic% colour3 sensiti-it of %uman ee is t%e%ig%est

(b) green (b) red(c ) -iolet (d) w%ite

#'2. ig%t appears to tra-el in straig%t lines since(a) t is not absorbed b t%e atmosp%ere(b)t is reflected b t%e atmosp%ere(c) ts wa-elengt% is -er small(d)ts -elocit is -er large.

#'#. ,%e de-ice w%ic% produces %ig%l co%erent sources is(a) ;resnel biprism (b) KoungEs double slit

(c ) aser (d) lodEs mirror

#'*. ! calcite crstal is placed o-er a dot on a piece of paper and rotated. =n-iewing t%roug% calcite3 one will see

(a) ! single dot (b) two stationer dots(c ) two rotating dots (d) one dot rotating about t%e ot%er

#'&. 0%en lig%t is incident at polarising angel3 w%ic% is completel polarised(a) reflected lig%t (b) refracted lig%t

(c ) bot% (d) neit%er

#'. ,wo icols are oriented wit% t%eir principal planes ma+ing an angle of O.,%en t%e percentage of incident unpolarised lig%t w%ic% passes t%roug% t%e sstemis

(a) 1 (b) &(c )12.& (d) #5.&

#'5. 0%en a source of lig%t is receding awa from an obser-er3 t%en t%e spectrallines will get displaced towards

(a) -iolet region (b) red region

(c ) ultra-iolet region (d) blue region

#'. 0%en t%e lig%t source is mo-ing towards an obser-er3(a) wa-elengt% of lig%t decreases(b)wa-elengt% of lig%t increases(c) wa-elengt% of lig%t remains unc%anged(d)-elocit of lig%t increase

#''. n t%e context of Coppler effect in lig%t3 t%e term red s%ift signifies

(a) decrease in fre


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(a) 17 (b) 27(c ) 257 (d) #7

*. t is desired to p%otograp% t%e image of an object placed at a distance of # mfrom plane mirror. ,%e camera3 w%ic% is at a distance of *.& m from mirror s%ould

be focused for a distance of(a) # m (b) *.& m(c ) m (d) 5.& m.

*'. ! lens of power G2 diopter is placed in contact wit% a lens of power @1diopter. ,%e combination will be%a-e li+e(a) a con-ergent lens of focal lengt% & cm

(b) a di--ergent lens of focal lengt% 1 cm(c) a con-ergent lens of focal lengt% 1 cm(d) a con-ergent lens of focal lengt% 2 cm

*1. ;raun%ofer spectrum is a(a) line absorption spectrum(b)band absorption spectrum(c) line emission spectrum(d)band emission spectrum.

*11. ! ra of lig%t is incident at an angle of Oon one face of a prism of angle#O. ,%e emergent ra of lig%t ma+es angle of #Owit% incident ra of lig%t ma+esan angle of #Owit% incident ra. ,%e angle made b emergent ra wit% secondface of prism will be

(a) O (b) 'O(c ) *&O (d) #O.

*12. n abo-e


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on t%e obser-er and t%e place of obser-ation.

*1&. !n obser-er loo+s at a tree of %eig%t 1& meters wit% a telescope ofmagnifing power 1. ,o %im3 t%e tree appears

(a) 1 times taller (b) 1& times taller (c ) 1 times nearer (d) 1& times nearer.

*1. ,%e focal lengt% of objecti-e and ee piece of a microscope are 1cm and &cm respecti-el. f t%e magnifing power for relaxed ee is *&3 t%en lengt% of t%etube is

(a) ' cm (b) 1& cm(c ) 12 cm (d) cm.

*15. ! conca-e mirror %as a focal lengt% 2 cm. ,%e distance between t%e twopositions of t%e object for w%ic% t%e image si>e is double of t%e object si>e is(a) # cm (b) 2 cm(c ) cm (d) * cm.

*1. ,%e refracti-e index of a prism is 2. ,%is prism can %a-e a maximumrefracting angle of

(a) *&O (b) #O (c) 'O (d) O

*1'. !n object is +ept at a distance of 1 cm from a t%in lens and t%e imageformed is real. f t%e object is +ept at a distance of cm from t%e same lens3 t%eimage formed is -irtual. f t%e si>es of t%e images formed are e


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**5.,%e functions of grap%ite and t%e control rods in a nuclear reactor are(a) to produce neutrons and to s%ield t%e reactor respecti-el(b) to slow down t%e neutrons and to absorb t%e excess neutron reactor

respecti-el(c) to absorb t%e excess neutrons and to s%ield t%e reactor respecti-el

(d) to absorb neutrons and to reduce t%e energ of t%e neutronsrespecti-el .

**. Curing a nuclear fission reaction(a) ! %ea- nucleus brea+s into two fragments b itself(b) ! lig%t nucleus bombarded b t%ermal neutrons brea+s up(c) ! %ea- nucleus bombarded b t%ermal neutrons brea+s up(d) two lig%t nuclei combine to gi-e a %ea-ier nucleus and possibl ot%er

products.

**'.,%e ratio of molecular mass of two radioacti-e substances is #/2 and t%e ratioof t%eir deca constants is */#. ,%en3 t%e ratio of t%eir initial acti-it per mole willbe

(a) 2 (b) */#(c ) /' (d) '/.

*&.0%en an electron in %drogen atom in ground state absorbs a p%otom ofenerg 12.1 eN3 its angular momentum

(a) decreases b 2.11 x 1@#*s(b) increases b 1.&& x 1@#*s(c) decreases b 1.&& x 1@#*s(d) increases b 2.11 x 1@#*s

*&1.0or+ function of a metal depends upon(a) ts mass(b)ts -alenc(c) electron densit(d)one of t%e abo-e

*&2.0%ic% of t%e following is a crstalline solid(a) grap%ite (b) calcite(c ) gallium (d) oxgen.

*.Ciamond is -er %ard because(a) it is co-alent solid(b)it %as large co%esi-e energ(c) %ig% melting point

(d)insoluble in all sol-ents

*&*. Lesisti-it of a semiconductor depends on


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(a) s%ape of semiconductor(b)atomic nature of semiconductor(c) lengt% of semiconductor(d)s%ape and atomic nature of semiconductor

*&&. J%ange in temperature(a) increase forward resistance(b) increase re-erse resistance(c) affects N@ c%aracteristics of p@n junction(d)does not affect N@ c%aracter of p@n junction.

*&. $fficienc of(a) %alf wa-e rectifier is more t%an full wa-e rectifier(b)%alf wa-e rectifier is almost negligible

(c) full wa-e rectifier is more t%an %alf wa-e rectifier(d)all of t%e abo-e.

*&5. ,ransistor parameter(a)ne-er c%ange(b)are not same e-en for transistors of t%e same tpe(c )alwas c%ange(d)are alwas same

*&. n t%e binar number sstem 1 G 111 is e


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P1112G P1112is e to 2 M8>(c) from 2 M8> to # M8>(d)none of t%e abo-e.

*. ;ading is t%e -ariation in t%e strengt% of a signal at a recei-er due to(a) interference of wa-es(b)diffraction of wa-es(c) polarisation of wa-es(d)none of t%e abo-e.

*'. Hoint to point communication re


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(d)all of t%e t%ree abo-e.

*5#. 0%ic% fibers are less expensi-e and simple to construct(a) Dingle@mode step index fiber(b)Multi@mode step index fiber

(c) Multi graded@index fiber(d)!ll are e(c ) 1& 8> (d) & +8>.

*55. n amplitude modulation3 if modulation index is more t%an 173 t%en(a) t%e wa-e gets distorted (b) efficienc increases(c ) power decreases (d) none of t%e abo-e.

*5. ! %ollow metallic sp%ere of radius 1 cm is gi-en a c%arge of #.2 T 1 @'J.,%e electric intensit at a point * cm from t%e centre is

(a) 'x1@'J@1 (b) 2 J@1(c ) 2. J@1 (d) >ero.

*5'. !n [@particle and a proton are accelerated t%roug% same potential differencefrom rest. ;ind t%e ratio of t%eir final -elocit

(a) W2: 1 (b) 1: 1(c ) 1: W2 (d) 1: 2 .

*. ,wo particles of masses mand 2 mwit% c%arges 2qand 2qare placed in auniform electric field $ and allowed to mo-e for t%e same time. ,%e ratio of t%eir9.$. will be

(a) 2: 1 (b) : 1

(c ) *: 1 (d) 1: * .

*1. 0%ic% of t%e following are true w%en t%e cells are connected in series


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(a) current capacit decreases(b)current capacit increases(c) t%e e.m.f. decreases(d) t%e e.m.f increases

*2. Noltmeter %as a resistance of 2 + . 0%en it is connected inseries wit% aresistance L across a 2# N suppl3 it reads 2N. 0%at is t%e -alue of L(a) 2+ (b) #+ (c) *+ (d) 1+

*#. ,%e same mass of copper is drawn into two wires 1 mm and # mm t%ic+.,%ese two wires are connected in series to t%e source of current. 0%at is t%e ratioof %eat produced in wires

(a) 1: ' (b) 1: '1(c ) ': 1 (d) 1: 1 .

**. ,%e e.m.f of t%e batter in a t%ermocouple is doubled. ,%e rate of %eatgenerated at one of t%e two junctions will

(a) Lemain unc%anged (b) become %alf(c ) be doubled (d) be four times.

*&. ! long solenoid is formed b winding 2 turns/cm. ,%e current necessarto produce a magnetic field of 2 milli tesla inside t%e solenoid will beapproximatel.

(a) 1.0 $ (b) 2.0 $

(c ) 4.0 $ (d) /.0 $

*. ! beam of protons is mo-ing parallel to a beam of electrons. Aot% t%ebeams will tend to

(a) Lepel eac% ot%er (b) come closer(c ) mo-e more apart (d) eit%er \bE or \cE.

*5. ,%e resultant magnetic moment of neon atom will be

(a) nfinit (b) ]A

(c ) ]A/2 (d) >ero .

*. ,wo identical bar magnets are suspended first wit% t%eir li+e poles oneac%ot%er and t%en wit% unli+e poles on eac%ot%er. f ,1,2are t%e respecti-e timeperiods of -ibration in two configurations3 t%en ,1 /,2 is

(a) Iero (b) 1(c ) _1 (d) R .

*'. ,wo pure indicators eac% of self inductance are connected in parallel. ,%e

total inductance is(a) /2 (b)


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*'. n fusion3 t%e percentage of mass con-erted into energ is about(a) .17 (b) .1 7

(c ) 17 (d) 17.

*''. !ir becomes conducting w%en t%e pressure ranges between(a) 5 cm and 1 cm (b) 1 cm and 1 cm(c ) 1 cm and 1@#cm (d) 1@*cm and 1@5cm.

&. Hlate current in a diode depends(a) onl on plate potential(b)onl on area of plate(c) onl on temperature of cat%ode

(d)on plate potential and temperature of cat%ode.


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ANSWER SHEET PHYSICS-

1 b 21 a *1 a 1 c 1 c2 a 22 c *2 a 2 b 2 c# a 2# c *# b # a # c* d 2* b ** b * d * c& c 2& b *& b & b & c c 2 c * d b d5 c 25 a *5 a 5 c 5 a c 2 c * b c c

' a 2' b *' a ' a ' a1 b # b & c 5 b ' d11 a #1 d &1 d 51 c '1 c12 d #2 d &2 a 52 b '2 b1# a ## c a 5# c '# d1* c #* c &* d 5* d '* d1& d #& b && a 5& c '& c1 d # b & b 5 d ' d15 a #5 d &5 a 55 d '5 d

1 a # b & a 5 c ' a1' a #' d &' d 5' c '' c2 c * a b c 1 b


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66/70

ANSWER SHEET PHYSICS-"

21 d 221 b 2*1 b 21 2122 c 222 c 2*2 c 22 222# d 22# a 2*# b 2# 2#2* b 22* a 2** c 2* 2*2& d 22& a 2*& b 2& 2&2 a 22 d 2* d 2 225 c 225 d 2*5 a 25 252 d 22 d 2* b 2 22' d 22' b 2*' b 2' 2'

21 d 2# d 2& d 25 2'211 c 2#1 a 2&1 251 2'1212 d 2#2 a 2&2 252 2'221# c 2## b 2 25# 2'#21* a 2#* c 2&* 25* 2'*21& b 2#& b 2&& 25& 2'&21 c 2# d 2& 25 2'215 c 2#5 d 2&5 255 2'521 a 2# b 2& 25 2'

21' d 2#' b 2&' 25' 2''22 c 2* a 2 2 #


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ANSWER SHEET PHYSICS-#

Q.o.

!ns. Q.o.

!ns. Q.o.

!ns. Q.o.

!ns.

2&1 a 251 a 2'1 J #11 b

2&2 b 252 a 2'2 J #12 d2 c 25# d 2'# ! #1# c2&* b 25* d 2'* A #1* b2&& d 25& d 2'& ! #1& a2& b 25 d 2' J #1 d2&5 c 255 d 2'5 c #15 b2& d 25 c 2' c #1 c2&' a 25' d 2'' b #1' a2 b 2 a # c #2 b

21 c 21 d #1 c #21 b22 d 22 c #2 d #22 c2# c 2# c ## c #2# d2* a 2* b #* d #2* b2& c 2& c #& b #2& a2 c 2 d # b #2 d25 c 25 a #5 d #25 c2 b 2 c # b #2 d2' c 2' c #' c #2' c

25 d 2' d #1 c ## a


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ANSWER SHEET PHYSICS-$

Q.o.

!ns. Q.o.

!ns. Q.o.

!ns. Q.o.

!ns.

##1 b #&1 c #51 c #'1 a

##2 b #&2 d #52 a #'2 c### b # c #5# b #'# c

##* d #&* c #5* b #'* d##& a #&& c #5& d #'& a## b #& c #5 a #' c##5 c #&5 b #55 d #'5 b## c #& c #5 a #' a##' b #&' c #5' b #'' a

#* a # c # c * a#*1 b #1 c #1 c *1 c#*2 b #2 d #2 c *2 a#*# d ## d ## d *# c#** b #* d #* c ** d#*& b #& d #& b *& d#* d # b # a * b#*5 b #5 b #5 b *5 d#* a # a # c * d

#*' c #' c #' c *' c#& c #5 d #' b *1 a


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ANSWER SHEET PHYSICS-%

Q.o.

!ns. Q.o.

!ns. Q.o.

!ns. Q.o.

!ns.

*11 b *#1 d *&1 d *51 c

*12 a *#2 b *&2 b *52 d*1# d *## c * b *5# b*1* a *#* d *&* b *5* b*1& c *#& c *&& c *5& b*1 b *# c *& c *5 a*15 b *#5 b *&5 b *55 a*1 d *# b *& d *5 d*1' b *#' b *&' b *5' c*2 b ** a * b * b

*21 d **1 a *1 a *1 d*22 d **2 d *2 c *2 c*2# a **# d *# c *# a*2* d *** a ** a ** c*2& d **& c *& d *& d*2 b ** b * c * d*25 b **5 b *5 c *5 d*2 c ** d * a * a

*2' b **' b *' a *' a*# a *& d *5 a *' c

*'1 a*'2 a*'# d*'* d*'& c*' b*'5 b

*' c*'' c& d


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