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MODERN SCHOOL , VAISHALI
COMPILED HOLIDAYS HOMEWORK
2019-20
CLASS-XII
ENGLISH:
Do the following assignment in your creative writing register.
Q1.On behalf of your parents draft a formal invitation to be sent to your friends and relatives on the
occasion of your brother’s marriage.
Q2. Draft an invitation to be sent to your friends and relatives on the occasion of the inaugural
ceremony of your new showroom.
Q3.On behalf the Principal of your school draft an invitation to be sent to the grandparents of the
students on the occasion of ‘The Grand Parents Day’. Invent other details yourself.
Q4.You are Vivek Bansal, the captain of your school football team. You have received an invitation from
RBS Public School, Kanpur to play a friendly exhibition match at their stadium. Write a formal reply to it.
Q5.You are Ranjan Rana.You have been invited to be the judge at an Interschool debate contest on 6
July 20XX by the Principal of Global School, New Delhi. Write a formal reply accepting the invitation.
Q6.Principal, Sunrise Global School, Agra requires a receptionist for her school. Draft a suitable
advertisement in about 50 words to be published in the classified columns of a national newspaper
giving all the necessary details, qualifications and experience required for the post.
Q7.You are Harish /Harshita of class XII,Sewa Nagar,Pune.You want to sell your flat as you are shifting to
another city for work. Draft a suitable advertisement in not more than 50 words to be published in ‘The
Pune Times’ under the classified column.
Q8. As the Manager of ‘PARIDHAN’ a readymade garments sales outlet, draft an advertisement for
publication in the local dailies offering 20% festival discount on all items.
Q9. An old man aged 68, poor vision, mentally upset has been missing for a week. Draft a suitable
advertisement “MISSING PERSONS” column of a newspaper in about 50 words.
Q10.You have found a briefcase while travelling by’ The AP Express’. Write a suitable advertisement for
the “LOST AND FOUND” Columns of a national daily. State the details required for your satisfaction.
SCIENCE STREAM
PHYSICS
1. HOLIDAY HOMEWORK/ASSIGNMENT Make a investigatory project on any of topic related to any
branch of physics or a working model along with its synopsis. The following should be under
consideration while doing project report.
• Aim of the project
• Acknowledgement
• Theory and principle involved • Observation table
• Calculation and result
• Graph if related
• Bibliography.
2. Do complete all ncert example and back exercise .from chapter 1 to till chapters covered till 31
may.
3. Do complete all the assignment question given for chapter 1 to 4.
All the holiday homework,assignment question,and solution of paper must be done on separate
CHAPTER-1 ELECTROSTAT
1. Name the physical quantity whose SI unit is volt/meter. Is it a scalar or a vector quantity
2. Give one example of a system where electric field is zero but not electric potential(ii)
electric potential is zero but not the electric field?
3. Two point charges repel each other with a force F when placed in water of dielectric
constant 81. What will be the force between them when placed the same distance apart in
air ?
4. Electric dipole moment of CuSO4 molecule is 3.2 × 10-32. Find the separation between
copper and sulphate ions.
5. A charge q is placed at the centre of an imaginary spherical surface. What will be the
electric flux due to this charge through any half of the sphere?
6. Draw the electric field vs distance (from the centre) graph for (i) a long charged rod
having linear charge density λ < 0 (ii) spherical shell of radius R and charge Q > 0.
7. Diagrammatically represent the position of a dipole in (i) stable (ii) unstable equilibrium
when placed in a uniform electric field.
8. A charge Q is distribution over a metal sphere of radius R. What is the electric field and
electric potential at the centre ?
9. What is the total positive or negative charge present in 1 molecule of water?
10. How does the energy of dipole change when it is rotated from unstable equilibrium to
stable equilibrium in a uniform electric field?
11. Write the ratio of electric field intensity due to a dipole at a point on the equatorial line
to the field at a point on the axial line, when the points are at the same distance from the
centre of dipole?
12. An uncharged conductor A placed on an insulating stand is brought near a charged
insulated conductor B. What happens to the charge and potential of B ?
13. An electron and proton are released from rest in a uniform electrostatic field. Which of
them will have larger acceleration and why?
14. In an uniform electric field of strength E, a charged particle Q moves point A to point B
in the direction of the field and back from B to A. Calculate the ratio of the work done by
the electric field in taking the charge particle from A to B and from B to A.
15. If a dipole having charge ±2µC is placed inside a sphere of radius 2 m, what is the net
flux linked with the sphere.
16. Four charges + q, – q, + q, – q are placed as shown in the figure. What is the work done
in bringing a test charge from ∞ to point 0.
17. What is dielectric strength ? Write the value of dielectric strength of air?
18. Two charges – q and + q are located at points A (0, 0, – a) and B (0, 0, + a). How much
work is done in moving a test charge from point (b, 0, 0) to Q (– b, 0, 0) ?
19. If an electron is accelerated by a Potential difference of 1 Volt, Calculate the gain in
energy in Joule and electron volt?
20. Draw schematically the equipotential surface corresponding to a field that uniformly
increases in magnitude but remains in a constant (say z) direction.
SHORT ANSWER QUESTIONS (2 MARKS)
1. An oil drop of mass m carrying charge – Q is to be held stationary in the gravitational
field of the earth. What is the magnitude and direction of the electrostatic field required
for this purpose ?
2. Draw E and V versus r on the same graph for a point charge
3. Find position around dipole at which electric potential due to dipole is zero but has non
zero electric field intensity.
4. Derive an expression for the work done in rotating an electric dipole from its equilibrium
position to an angle θ with the uniform electrostatic field
5. A electrostatic field line can not be discontinuous.Why ?
6. A thin long conductor has linear charge density of 20 µC/m. Calculate the electric field
intensity at a point 5 cm from it. Draw a graph to show variation of electric field intensity
with distance from the conductor.
7. 7.Derive electric field inside and outside of a atom having nuclear charge Ze?
8. Show that the electric field intensity at a point can be given as negative of potential
gradient
9. A charged metallic sphere A having charge QA brought in contact with an uncharged
metallic sphere of same radius and then separated by a distance d. What is the
electrostatic force between them?
10. An electron and a proton travel through equal distances in the same uniform electric field
E. Compare their time of travel. (Neglect gravity)
11. Two point charges – q and + q are placed 2l metre apart, as shown in Fig. Give the
direction of electric field at points A, B, C and D, A is mid point between charges – q and
+ q
12. What is the electric field at O in Figures (i), (ii) and (iii), ABCD is a square of side r.
13. What should be the charge on a sphere of radius 4 cm, so that when it is brought in
contact with another sphere of radius 2 cm carrying charge of 10 µC, there is no transfer
of charge from one sphere to other ?
14. Does the maximum charge given to a metallic sphere of radius R depend on whether it is
hollow or solid ? Give reason for your answer.
15. Two charges Q1 and Q2 are separated by distance r. Under what conditions will the
electric field be zero on the line joining them (i) between the charges (ii) outside the
charge
16. Define gauss theoem,hence find electric field for a nonconducting hemisphere ?
17. Two charges of same polarity can attract each other if yes explain why?
18. Calculate the work required to separate two charges 5µc and – 2µc placed at (– 3 cm, 0,
0) and (+ 3 cm, 0, 0) infinitely away from each other.
19. What is electric field between the plates with the separation of 2 cm and (i) with air (ii)
dielectric medium of dielectric constant K. Electric potential of each plate is marked in
the following figure.
20. Calculate the work done in taking a charge of 1 µC in a uniform electric field of 10 N/C
from B to C given AB = 5 cm along the field and AC = 10 cm perpendicular to electric
field.
21. Two charges – q and + q are located at points A (0, 0, – a) and B (0, 0, + a) respectively.
How much work is done in moving a test charge from point P (7, 0, 0) to Q (– 3, 0, 0) ?
22. What is meant by dielectric polarisation ? Why does the electric field inside a dielectric
decreases when it in placed in an external field ?
23. A point charge Q is kept at the intersection of (i) face diagonals (ii) diagonals of a cube
of side a. What is the electric flux linked with the cube in (i) & (ii)
24. There are two large parallel metallic plates S1 and S2 carrying surface charge densities σ1
and σ2 respectively (σ1 > σ2) placed at a distance d apart in vacuum. Find the work done
by the electric field in moving a point charge q a distance a (a < d) from S1 and S2 along a
line making an angle π/4 with the normal to the plates?
25. LONG ANSWER QUESTIONS (5 MARKS)
26. Derive an expression for the strength of electric field intensity at a point on the axis of a
uniformly charged circular coil of radius R carrying charge
27. Derive an expression for torque experienced by dipole placed in uniform electric field.
Hence define electric dipole moment.
28. State Gauss’s theorem. Derive an expression for the electric field due to a charged plane
sheet. Find the potential difference between the plates of a parallel plate capacitor having
surface density of charge 5 × 10–8 Cm–2 with the separation between plates being 4 mm.
NUMERICALS
1. What should be the position of charge q = 5µC for it to be in equilibrium on the line
joining two charges q1 = – 4 µC and q2 = 16 µC separated by 9 cm. Will the position
change for any other value of charge q ?
2. Two point charges 4e and e each, at a separation r in air, exert force of magnitude F.
They are immersed in a medium of dielectric constant 16. What should be the separation
between the charges so that the force between them remains unchanged.
3. Two point charges 6 µC and 2 µC are separated by 3 cm in free space. Calculate the work
done in separating them to infinity.
4. ABC is an equilateral triangle of side 10 cm. D is the mid point of BC charge 100 µC, –
100 µC and 75 µC are placed at B, C and D respectively. What is the force experienced
by a 1 µC positive charge placed at A ?
5. A 5 MeV α particle is projected towards a stationary nucleus of atomic number 40.
Calculate distance of closest approach.
6. A point charge developes an electric field of 40 N/C and a potential difference of 10 J/C
at a point. Calculate the magnitude of the charge and the distance from the point charge.
7. Two point charges q1 = +0.2C and q2 = +0.4C are placed 0.1 m apart. Calculate the electric
field at (a) the mid-point between the charges. (b) a point on the line joining q1 and q2 such
that it is 0.05m away from q2 and 0.15m away from q1.
8. If the force experienced by a point charge on the axis of an electric dipole be F, what will
be the force experienced by the point charge if its distance is doubled from the dipole?
9. Two point charges 10 μC and 20μC are separated by a distance ‘r’ in air. If an additional
charge of -8μC is given to each, by what factor does the force between the charge changes?
10. Two point charges q1 = +0.2C and q2 = +0.4C are placed 0.1 m apart. Calculate the electric
field at (a) the mid-point between the charges. (b) a point on the line joining q1 and q2 such
that it is 0.05m away from q2 and 0.15m away from q1.
11. Two large metal plates each of area 1 m2 placed facing each other at a distance of 10 cm
and carry equal and opposite charge on their faces if the electric field between the plates
is 100 N/c find the charge on each plate?
12. An electron is revolving around a long line charge having charge density 2 x 10-8 C/m
find the kinetic energy of the electron assuming that it is independent of the radius of
electrons Orbit?
13. A Proton falls down through a distance of 2 cm in a uniform electric field of magnitude
3.34 X10-3N/C determine the acceleration of the electron that time taken by the proton to
fall through the distance of 2 cm and the direction of the electric field given mass of
proton is 1.67 X10-27 kg
14. A particle of mass 10-3 and a charge 5 microcoulomb is thrown at a speed of 20 m/S
against a uniform electric field or strength 2X10-3N/C how much distance will it travel
before coming to rest
15. A pendulum of mass 80 milligram carrying a charge of 20 microcoulomb is at rest in a
horizontal uniform electric field 2X10-4 volt per metre find the tension in the thread of the
pendulum and the angle and the angle it makes with the vertical?
16. At which point the line joining the two charges minus 4 microcoulomb and + 8
microcoulomb is electric field.
CHAPTER-2 ELECTRIC POTENTIAL AND CAPACITANCE
1. When plates of charged capacitors are more separated, its capacitance decreases and its
energy q2/2C increases. Explain.
2. If the plates of charged capacitors are further separated while the capacitors is still
connected to the charging battery, what will happen to the energy?
3. A dielectric slab of thickness equal to plate separation is introduced between plates of
charged capacitors. What will be the changes, if any the value of q, C, V, E and U (energy
stored)?
4. A dielectric slab of thickness equal to plate separation is introduced between plates of
charged capacitor, if the slab be introduced while the capacitor is still connected to the
charging battery. Describe the changes in the value of the quantities.
5. Explain why the polarization of dielectric of a dielectric reduces the electric field inside
the dielectric.
6. What is a dielectric? A dielectric slab of thickness t is kept between the plates of a parallel
plate capacitor separated by distance d. Derive the expression for the capacity of the
capacitor for t<<d.
7. Two positive charges of 0.2μC and 0.01μC are placed 10cm apart. Calculate the work
done in reducing their distance to 5 cm.
8. Two Point charges 3 x10-8 C and -2 x 10-8 are located 15 cm apart in air. Find at what point
on the line joining these charges the electric potential is zero. Take potential at infinity to
be zero.
9. Show that the electric field is always directed perpendicular to an equipotential surface.
10. Draw 3 equipotential surfaces corresponding to a field that uniformly increases in
magnitude but remains constant along Z-direction. How are these surfaces different from
that of a constant electric field along Z-direction?
11. Two point’s charges A and B of value +5μC and +6 μ C are kept 12 cm apart in air.
Calculate the work done when charge B is moved by 2 cm towards charge A.
12. The graph shows the variation of voltage, ‘V’ across the plates of two capacitors A and B
versus increase of charge, ‘Q’ stored on them. Which of the two capacitors has higher
capacitance? Give reason for your answer.
A
B
13. A parallel plate capacitor is to be designed with a voltage rating 1kV using a material of
dielectric constant 3 and dielectric strength about 107Vm-1. For safety we would like the
field never to be exceed say, 10% of the dipole strength. What minimum area of the plates
is required to have a capacitance of 50pF?
14. A parallel plate capacitor, each with plate are A and separation d, is charged to a potential
difference V. The battery used to charge it is then disconnected. A dielectric slab of
thickness d and dielectric constant K is now placed between the plates. What change, if
any, will take place in
(i) Charge on the plates,
(ii) Electric field intensity between the plates,
(iii) Capacitance of the capacitor
Justify your answer in each case.
15. Three identical capacitor C1, C2 and C3 of capacitance 6 μ F each are connected to a 12V
battery as shown-
C1
Find
(i) Charge on each capacitor
(ii) Equivalent capacitance of the network
(iii) Energy stored in the network of capacitors.
16. Can two equipotential surfaces intersect each other? Give reasons.
Two charges –q and +q are located at points A(0,0,-a) and B(0,0,a) respectively. How much
work is done in moving a test charge from point P(7,0,0) to Q(-3, 0, 0)?
17. Derive and expression for the energy stored in a parallel plate capacitor. On charging a
parallel plate capacitor to a potential V, the spacing between the plates is halved, and a
dielectric medium of εr = 10 is introduced between the plates, without disconnecting the
C2
C3
d.c. source. Explain, using suitable expressions, how the (i) capacitance, (ii) electric field
and (iii) energy density of the capacitor change.
18. Two spherical conductors A and B of radii rA and rB (rA>rB) have been given equal charges.
In which direction will the charge flow when these spheres are brought in contact? Give
reason for your answer.
19. - Explain schematically the equipotential surfaces corresponding to
(a) A constant electric field in the z-direction.
(b) A field that uniformly increased in magnitude but remains same in a constant
(say, z) direction.
(c) A single positive charge at the origin.
20. n identical capacitors are joined in series and the combination is given a potential difference
V. If these capacitors be disconnected and joined in parallel, what potential difference will
be retained across the combination?
21. n identical capacitors are joined in series and the combination is given a potential
difference V. If these capacitors be disconnected and joined in series, what potential
difference will be obtained across the combination?
22. Two parallel metal plates are placed at different positions within a parallel capacitor. Plates
1 and 4 are connected to a battery whose electromotive force is E. Assume plate 1 to be at
zero potential:
(a) What is the potential on each of the four plates?
(b) How does the potential on plates 1 and 3 and the field intensity in all three gaps change
after 2 and 3 are connected briefly by a wire? What then happens to the charge on plates 1
and 4?
(c) Are plates 2 and 3 charged before and after they are connected?
1 2 3 4
V
23. If a point charges +q, is taken first from A to C then from C to B of a circle drawn with
another point charge +q as centre, then along which path more work will be done?
A
Q C
B
24. A 500μC charge is at the centre of a square of side 10cm. find the work done in moving a
charge of 10 μ C between two diagonally opposite points on the square.
25. An α-particle and a proton are accelerated through the same potential difference. Calculate
the ratio of velocities acquired by the two particles.
26. Figures shows three points P, Q and R in a uniform electrostatic field. At which point will
the electric potential be maximum?
27. Define electron-volt.
28. Two protons A and B are placed between two parallel plates having a potential difference
V as shown in the figure. Will these protons experience equal or unequal force?
29. An uncharged spherical thin metallic shell has a point charge q at its centre. The electric
field inside the shell is 1/4π𝜀0( q/r2 ) The electric field outside the shell is also 1/4π𝜀0( q/r2
). Here r is the distance of the observation point from the centre of the sphere.
(a) Has the shell any effect on the field due to q?
(b) What is the effect of presence of q on the shell?
(c) If a second point charge is held outside the shell, does this outside charge
experience a force?
(d) Will the inside charge experience a force?
(e) Do we come across a contradiction of Newton’s third law of motion?
30. Two material slabs of dielectric K1 and K2 have been filled in between the two plates or
the capacitors as shown in figure. What will be the capacitance of the capacitor?
31. Two dielectric slabs of dielectric constants K1 and K2 have been filled in between the
plates of a capacitor as shown in figure (b) what will be the capacitance of the capacitor?
32. The space between the plates of a parallel plate capacitor of capacitance 3 units is filled
with three dielectric slabs of identical size as shown in figure. If the electric constants of
the three slabs are K1, K2 and K3, then the new capacitance?
K1
K2
1
K1 K2
1
33. A point charge Q is at a distance R/2 from the centre of a circle of radius R. Another point
charge q is to be moved from (C to D) where C and D are two points on the circle
diametrically opposite to each other. How much work is done by the electrostatic force
produced by Q on q?
34. A uniform electric field E of 300NC-1 is directed along PQ. A, B and C are three points in
the field having x and y coordinated (in metre) as shown in the figure. Calculate potential
difference between the points (i) A and B and (ii) B and C.
35. A parallel plate capacitor is charged to a potential difference ‘V’ by a D.C. The capacitor
is then disconnected from the source. If the distance between the doubled, state with reason
how the following will change:
(i) Electric field between the plates;
(ii) Capacitance and
(iii) Energy stored in the capacitor.
36. A student is having four charges +Q, +Q, -Q and –Q. He has to arrange all charges on the
four corners of a square. How can he arrange them so that the potential in the centre of
the square be zero?
37. Three identical capacitors C1, C2 and C3 are joined to a battery of e.m.f. as shown. Let V1,
V2 and V3 be the potential differences across C1, C2 and C3 respectively. Establish the
relation among V1, V2 and V3 with V.
38. Two insulated charged spheres of radii 7 cm and 13 cm and having the same charge is
connected by a conductor and then they are separated? Which of the two spheres will
carry greater charge?
39. A charge of 10μC is brought from point P (0,4cm, 0) to R (3cm, 0, 0) via point Q (0, 0,
6cm) in vacuum .calculate the work done if the charge at origin is 20μC.
40. A parallel plate capacitor with air between the plates has a capacitance of 8 pF. What will
be the capacitance if the distance between the plates be reduced by half and the space
between them is filled with a substance of dielectric constant K = 6?
41. 10 μf capacitor is charged by a 30 V D.C. supply and then connected across an uncharged
50μF capacitor. Calculate;
(i) The final potential difference across the combination, and
(ii) The initial and final energies.
How will you account for the difference in energy?
42. A capacitor of capacitance C has distance between plates d. A very thin mesh wire is
placed as shown. Estimate new capacitance.
43. Four capacitors are connected as shown in figure. Calculate the equivalent capacitance
between the point X and Y.
44. A charge +Q is placed on a large spherical conducting shell of radius R. Another small
conducting sphere of radius r carrying charge ‘q’ is introduced inside the large shell and
is placed at its centre. Find the potential difference between two points, one laying on the
sphere and the other on the shell.
45. Distinguish between polar and non-polar dielectrics.
46. A capacitor of capacitance C is charged fully by connecting it to a battery of e.m.f. E. It is
then disconnected from the battery. If the separation between the plates of the capacitors is
doubled, what will be effect on?
(a) Charge stored by the capacitor,
(b) Potential difference across it,
(c) Field strength between the plates,
(d) Energy stored by the capacitor?
47. - In a uniform electrostatic field of strength 5 x 105 N/C, find the potential between the
points P and R as shown. Given PR = 5 cm and QR = 3 cm.
48. Find the equivalent capacitance of the combination of capacitors between the points A
and B as shown. Also calculate the total charge that flows in the circuit when a 100 V
battery is connected between the points A and B.
49. Three capacitors of capacitances C1, C2 and C3 are connected (i) in series, (ii) in parallel.
Show that the energy stored in the series combination is the same as that in the parallel
combination
50. Two parallel plate capacitor, X and Y, have the same area of plates and same separation
between them. X has air between the plates while Y contains a dielectric medium of εr
=4.
(i) Calculate the capacitance of each capacitor if equivalent capacitance of the combination
is 4μF.
(ii) Calculate the potential difference between the plates of X and Y.
(iii) What is ratio of electrostatic energy stored in X and Y?
51. A capacitor is made of a flat plat of area A and second plate having a stair like structure
as shown in figure below. If width of each stair is A/3 and height is d. find the
capacitance of the arrangement.
52. Explain the under lying principle of working of a parallel plate capacitor. If two similar
plates, each of area A having surface charge densities +σ and –σ are separated by a distance
d in air, write expressions for
(i) The electric field at points between the two plates.
(ii) The potential difference between the plates.
(iii) The capacitance of the capacitor so formed.
53. The equivalent capacitance of the combination between A and B in the given figure is
4μF.
(i) Calculate capacitance of the capacitor C.
(ii) Calculate charge on each capacitor of if a 12 V battery is connected across terminals A
and B.
(iii) What will be the potential drop across each capacitor?
54. A uniform electric field E exists between two charged plates as shown in the figure. What
should be the work done in moving a charge ‘q’ along the closed rectangular path
ABCDA.
55. The electric field at a point due to a point charge is 40N/C and the electric potential at
that point is 20J/C. Calculate the distance of the point from the charge and the magnitude
of the charge.
56. A point charge ‘q’ is placed at O as shown in figure. Is VP- VQ positive or negative when
(i) q>0, (ii) q <0? Justify your answer
CHAPTER-3 CURRENT ELECTRICITY
1. A 10 Ω thick wire is stretched so that its length becomes three times. Assuming that there is
no change in its density on stretching, calculate the resistance of the new wire. 2. A carbon resistor 47kΩ is to be marked with rings of different colours for its identification.
Write the sequence of colours.
3. In the circuit diagram given below, the cell E1 and E2 have emfs of 4 V and 8 V and internal
resistance 0.5Ω and 1.0Ω respectively. Calculate the current each resistance.
4. - Compare the amount of heat developed in three conductors of the same material having
lengths in the ratio 2:3:5 and radii in the ratio 5:3:2, when joined in parallel.
5. A wire of 15Ω resistance is gradually stretched to double its original length. It is then cut into
two equal parts. These parts are then connected in parallel across a 3.0 volt battery. Find the
current drawn from the battery.
6. Voltage of 30 V is applied across a carbon resistor with first, second and third rings of blue,
black and yellow colours respectively. Find the value of current through the register.
7. Six resistors, each of value 4Ω, are joined together in a circuit as shown in the figure.
Calculate equivalent resistance across the point A and B. If a cell of emf 2V is connected
across AB, compute the current through the arms AB and DF of the circuit.
8. Two cells of emf 1.5 V and internal resistance 2Ω and 1Ω respectively have their negative
terminals joined by a wire of 6Ω and positive terminals by a wire of 4Ω resistance. A third
resistance wire of 8Ω connects middle points of these wires. Draw the circuit diagram. Using
Kirchhoff’s law, find the potential difference at the end of this third wire.
9. Four identical cells, each of emf 2V are joined in parallel providing supply of current to
external circuit consisting of two 15Ω resistors joined in parallel. The terminal voltage of the
cell, as ready by an ideal voltmeter is 1.6 volt. Calculate the internal resistance of each cell.
10. In a metre bridge, the balance point is found to be at 39.5 cm from the end A, when the
resistor Y is of 12.5 ohm. Determine the resistance of X. Why are the connections between
resistors in a metre bridge made of thick copper strip? What happens if the galvanometer and
cell are interchanged at the balance point of the bridge? Would the galvanometer show any
current?
11. AB is 1 metre long uniform wire of 10ohm resistance. The other data are given as shown in
the figure:
Calculate:
(i) Potential gradient along AB, and (ii) length AO of the wire, when the galvanometer shows
no deflection.
12. The potentiometer wire of length 100 cm has a resistance of 10Ω. It is connected in series
with a resistance 5Ω and a accumulator of emf 3 V having negligible resistance.
A source of 1.2V is balanced against a length ‘L’ of the potentiometer wire. Find the value of
L.
13. The variation of potential difference V with length l in case of two potentiometer X and Y
is as shown in the given diagram. Which one of these two will you prefer for comparing
emfs of two cells and why?
14. A wire of uniform cross-section and length l has a resistance of 16Ω. It is cut into four equal
parts. Each part stretched uniformly to length l and all the four stretched parts are connected
in parallel. Calculate the total resistance of the combination so formed. Assume that
stretching of wire does not cause any change in the density of its material.
15. Two metallic wires of the same material have the same length but cross-section area is in the
rato 1:2. They are connected (i) in series and (ii) in parallel. Compare the drift velocities of
electrons in the two wires in both the cases (i) and (ii).
16. A conductor of length ‘l’ is connected to a.d.c. source of potential ‘V’. If the length of the
conductor is tripled by stretching it, keeping ‘V’ constant, explain how do the following
factors vary in the conductor. (i) Draft speed of electrons (ii) Resistance and (iii) Resistivity.
17. A Cylindrical metallic wire is stretched to increase its length by 5%. Calculate the percentage
change in its resistance.
18. A storage battery of emf 8V, internal resistance 1Ω, is being charged by a 120V d.c. source,
using a 15 Ω resistor in series in the circuit. Calculate (i) the current in the circuit, (ii)
terminal voltage across the battery during charging, and (iii) chemical energy stored in the
battery in 5 minutes.
19. A series battery of lead accumulators of emf 2.0 V and internal resistance of 0.5 Ω charged
by a 100 V d.c. supply. What series resistance should be used in the charging circuit in
order to limit the current to 8A? Using the required resistor, obtain (i) the power supplied
by the d.c. source and (ii) the power dissipated as heat.
20. - A thousand circuits has a fuse of 5A rating. Calculate the maximum number of bulbs of
rating 60W-220V each which can be connected in the house hold circuit.
21. It is said that voltmeter is not suitable for measuring the emf of cell. Explain.
22. The sequence of bands marked on a carbon resistor is; red , red, red, silver. What is its
resistance? Also give the tolerance.
23. The resistance of each of the three wires shown in the figure is 4Ω. This combination of
resistors is connected to a source of emf E. The ammeter shows a reading of 1A.
Calculate the power dissipated in the circuit.
24. Two primary cell of e.m.f. E1 and E2 (E1>E2) are connected to the potentiometer wire AB as
shown in the figure.
If the balancing lengths for the combination of the cell are 250 cm and 400 cm, find the ratio
of E1 and E2.
25. AB is 2 metre long uniform wire of 20ohm resistance. The other data are given as shown in
the figure. Calculate (i) potential gradient along AB, and (ii) length AO of the wire, when
the galvanometer shows no deflection.
26. V-I Graph for a metallic wire at two different temperatures T1 and T2 is as shown in the
following figure (a) which of the two temperatures T1 and T2 is higher and why?
27. V-I graph for parallel and series combination of two metallic resistors are as shown in figure
(b) which graph represents parallel combination? Justify your answer.
28. Why is voltmeter less accurate in measuring e.m.f. than a potentiometer?
29. A potentiometer wire of length 1 m is connected to a driver cell of emf 3V as shown in the
figure .
When a cell of 1.5 V emf is used in the secondary circuit, the balance point is found to be
60cm, On replacing this cell and using a cell of unknown emf, the balance point shifts to 80
cm.
(i) Calculate unknown emf of the cell
(ii) Explain with reason, whether the circuit works, if the driver cell is replaced with a cell of
emf 1V.
(iii) Does the high resistance R, used in the secondary circuit affect the balance point? Justify
your answer.
30. What is meant by the sensitivity of a potentiometer?
A battery E1 of 4 V and a variable resistance Rh are connected in series with the wire AB of
the potentiometer
The length of the wire of the potentiometer is 1m. When a cell E2 of e.m.f. 1.5 volt is
connected between points A and C, no current flows through E2. Length of AC = 60 cm
(i) Find the Potential difference between the ends A and B of the potentiometer.
(ii) Would the method work, if the battery E1 is replaced by a cell of e.m.f. of 1V?
31. Potentiometer wire, PQ of 1 m length is connected to a standard cell E1. Another cell, E2 of
e.m.f. 1.02 V is connected as shown in the circuit diagram with a resistance ‘r’ and a switch,
S. With switch, S open, null position is obtained at a distance of 51 cm from P.
Calculate:
(i) Potential gradient of the potentiometer wire and
(ii) e.m.f. of the cell E1.
(iii) When switch S is closed, will null point move towards P or towards Q? Give
reason for your answer.
32. Two wires A and B of the same metal and of the same length have their areas of cross-
section in the ratio of 2.1If the same potential difference is applied across each wire in turn,
what will be the ratio of the currents flowing in A and B?
33. A carbon resistor is marked in green, red and orange bands. What is the approximate
resistance of resistor?
34. A heating element using nichrome connected to a 230V supply draws an initial current of
3.2 A which settles after a few seconds at a steady value of 2.8 A. What is the steady
temperature of the heating element, if the room temperature is 27°C? Temperature
coefficient of resistance of nichrome averaged over the temperature range involved is 1.7 x
10-4 °C-1.
35. A wire of resistance 4R is bent in the form of a circle. What is the effective resistance
between the ends of diameter?
36. In Potentiometer experiment, It is advised to the null point in the middle of the wire. Why?
37. Two identical cell of emf 1.5 V each joined in parallel provide supply to an external circuit
consisting of two resistance of 17Ω each joined in parallel. A very high resistance voltmeter
reads the terminal voltage of cell to be 1.4V. Calculate the internal resistance of each cell.
38. Determine the voltage drop across the resistor R1 in the circuit given below with E = 65V,
R1 = 50Ω, R2 = 100Ω, R3 = 100Ω and R4 = 300Ω.
39. Two cells of emf E1 and E2 (E1>E2) are connected as shown in the figure. When a
potentiometer is connected between A and B, the balancing length of the potentiometer
wire is 300cm. On connecting the same potentiometer between A and C, the balancing
length is 100cm. Calculate the ratio of E1 and E2.
40. Three identical cells each of e.m.f. 4V and internal resistance ‘r’ is connected in series to a
6Ω resistor. If the current flowing in the circuit is 1.5A, calculate the internal resistance of
each cell.
41. The sequence of bands marked on a carbon resistor is Yellow, Red, Orange and silver. What
is its (i) resistance and (ii) tolerance?
42. In the circuit diagram, AB is a uniform wire of resistance 10 ohm and length one metre. It is
connected to a series arrangement of cell E1 of emf 2.0 V and negligible internal resistance
and a resistor R. Terminal A is also connected to an electrochemical cell E2 of emf 100mV
and a galvanometer G. In this setup, a balancing point is obtained at 40 cm mark from A.
Calculate the resistance of R. If E2 were to have an emf of 300 mV, where will you accept
the balancing point to be?
43. Calculate the current shown by the ammeter A in the circuit diagram given below.
44. Find the value of current in the circuit shown in figure.
45. A 20 V battery of internal resistance 1Ω is connected to three coils of 12Ω, 6Ω and 4Ω in
parallel, a resistance of 5Ω and a reversed battery (emf 8V and internal resistance 2Ω) as
shown-
Calculate : (i) the current in the circuit, (ii) current in resistor of 12Ω coil, and (iii) p.d. across each
battery.
46. Potential difference across terminals of a cell were measured (in volts) against different
current (in ampere) flowing through the cell. A graph was drawn which was a straight line
ABC. Using the data given in the graph determine,
(i) the emf and (ii) the internal resistance of the cell.
47. Find the value of the unknown resistance X, in the following circuit, if no current flows
through the section AO. Also calculate the current drawn by the circuit from the battery of
emf 6 V and neglible internal resistance.
48. Two cells E1 and E2 in the given circuit diagram have an emf of 5V and 9V and internal
resistance of 0.3Ω and 1.2Ω respectively.
Calculate the value of current flowing through the resistance of 3Ω
49. A battery of e.m.f. ‘E’ and internal resistance ‘r’, gives a current of 0.5A with an external
resistance 12Ω and a current of 0.25 with an external of 25Ω. Calculate internal resistance
of the cell.
50. How does the resistivity of (i) a conductor and (ii) a semiconductor vary with temperature?
Give reason for each case.
51.
CHAPTER-4 MOVING CHARGES AND MAGNETISM
52. Both electric field and magnetic field deflect a moving electron. What is the difference
between these deflections?
53. A circular coil is placed in a uniform magnetic field of strength 0.10 T normal to the plane of
the coil. If the current in the coil is 5.0 A, find;
(i) total torque on the coil;
(ii) total force on the coil;
(iii) average force on each electron in the coil due to the magnetic field
The coil made of copper wire of cross-sectional area 10-5 m2 and the free electron density in
copper is 1029m-3.
54. A circular coil of 100 turns, radius 10 cm carries of 5A. It is suspended vertically in a
uniform horizontal magnetic field of 0.5 T, the field lines making an angle of 60° with the
plane of the coil. Calculate the magnitude of the torque that must be applied on it to prevent
it from turning.
55. A proton and an alpha particle having the same kinetic energy are in turn allowed to pass
through a uniform magnetic field perpendicular to their direction of motion. Compare the
radii of the paths a proton and alpha particle.
56. The magnet of a galvanometer is horse shoe laminated magnet with concave pole faces.
Why?
57. Describe qualitatively the path of a charged particle moving in
1. a uniform electrostatic field, with initial velocity
(i) parallel to the field, (ii) perpendicular to the field, (iii) at an arbitrary angle with the
field direction;
2. a uniform magnetic field, with initial velocity (i) parallel to the field, (ii) perpendicular
to the field, (iii) at an arbitrary angle with the field direction;
3. a region with uniform electrostatic and magnetic fields parallel to each other, with
initial velocity (i) parallel, (ii) perpendicular, (iii) at an arbitrary angle with the
common direction of the fields.
58. A galvanometer has a resistance of 100Ω gives full scale deflection when a current of 1 mA
is passed through it. Calculate the value of resistance required to convert it into an ammeter
of the range of 1A.
59. An electron of kinetic energy 25keV moves perpendicular to the direction of a uniform
magnetic field of 0.2 millitesla. Calculate the time period of rotation of the electron in the
magnetic field.
60. A semi- conductor arc of radius 20 cm carries a current of 10 A. Calculate the magnitude of
the magnetic field at the centre of the arc.
61. Two parallel coaxial circular coils of equal ‘R’ and equal number of turns ‘N’, carry equal
current ‘I’ in the same direction and are separated by a distance ‘2R’. Find the magnitude and
direction of the net magnetic field produced at the mid-point of the line joining their centers.
62. In a galvanometer there is a deflection of 10 divisions per mA. The internal resistance of the
galvanometer is 60Ω. If a shunt of 2.5 is connected to the galvanometer and there are 50
divisions in all on the scale of the galvanometer, calculate the maximum current which the
galvanometer can read.
63. Explain the principle and working of a cyclotron with the help of labeled diagram. A
cyclotron’s oscillator frequency is 10MHz. what should be the operating magnetic field for
accelerating protons? If the radius of its ‘Dees’ is 600cm, what is the kinetic energy of the
proton beam produced by the accelerator? Express your answer in units of MeV. (e = 1.6 x
10-19C, mp = 1.67 x 10-27 kg, 1 MeV= 1.602 x 10-13J).
64. Consider the circuit has shown where APB and AQB are semicircle. What will be the
magnetic field at the centre C of the circular loop?
65. Does the kinetic energy of a charged particle change due to its deflection in a magnetic field?
66. A circular coil of 30 turns and radius 8.0 cm carrying a current of 6.0 A is suspended vertically
in uniform horizontal magnetic field of magnitude 1.0T. The field line makes an angle of 60°
with normal to the coil. Calculate the magnitude of counter torque that must be applied to
prevent the coil from turning.
67. Derive a mathematical expression for the force per unit length experienced by each of the
two long current carrying conductors placed parallel to each other in air. Hence define one
ampere of current.
68. Two wires of equal length are bent in the form of two loops. One of the loops is square shaped
whereas, the other loop is circular. These are suspended in a uniform magnetic field and the
same current is passed through them. Which loop will experience greater torque? Give
reasons.
69. With the help of a neat and labeled diagram, explain the underlying principle and working of
moving coil galvanometer. What is the function of;
(i) Uniform redial of, (ii) Soft iron core in such a device?
70. Three sections of current carrying conductors having some current are shown in figure. In
which case, the magnetic, field produced at P is maximum? Find its value also.
71. If the current sensitivity of a moving coil galvanometer is increased by 20%, its resistance
also increased by 1.5 times. How will the voltage sensitivity of the galvanometer be affected?
72. Draw a schematic sketch if a cyclotron. Explain briefly how it works and how it used to
accelerate the charged particles.
(i) Show that time period of ions in a cyclotron in independent of both the speed and radius
of circular path.
(ii) What is resonance condition? How is it used to accelerate the charged particles?
73. In the figure, the straight wire AB is fixed while the loop is free to move under the influence
of the electric currents flowing in them. In which direction does the loop begin to move? Give
reason for your answer.
74. Two Parallel wires carrying current in the same direction attract each other. What about two
beams of electrons travelling parallel, and in the same direction to each other?
75. The coil of a galvanometer having a coil resistance of 100 ohm. Its shows full scale deflection
for a current of 5 x 10-4 A. How will you convert it to an ammeter of range 0-5A?
76. - A metallic rod of mass 0.3 kg/m is not allowed to roll on a smooth inclined plane of angle
30° with the horizontal by flowing a current in the rod. A magnetic field of 0.15 T is acting
in vertical direction. Calculate current flowing in the rod.
77. An electron beam projected a long + X-axis, experience a force due to a magnetic field
along the +Y-axis. What is the direction of the magnitude field?
78. Explain why two parallel straight conductors carrying current in the opposite direction kept
near each other in air repel?
79. Depict the magnetic field lines due to two straight, long, parallel conductors carrying currents
I1 and I2 in the same direction. Hence, deduce an expression for the force acting per unit
length on one conductor due to the other. Is this force attractive or repulsive?
Figure shows a rectangular current –carrying loop placed 2 cm away from a long, straight,
current-carrying conductor? What is the direction and magnitude of the net force acting on the
loop?
80. An electron and a proton moving with the same speed enter the same magnetic field region
at right an angles to the direction of the field. For which of the two particles will the radius
of circular path be smaller?
81. A wire of length L metre carrying a current of 1 ampere is bent in the form of a circle. Find
its magnetic moment.
82. Why should the spring /suspension wire in a moving coil galvanometer have low tensional
constant?
SOLVE ALL NCERT EXAMPLES AND BACK EXERCISE QUESTIONS
CHEMISTRY
• Do the given assignment in notebook.
• Revise chapter-1,2,3,4,9,10 .Make a project on any topic related to the syllabus. This project
will be marked in final chemistry practical.
Suggested topics for project:
• Study of presence of oxalate ions in guava fruit at different stages of ripening.
• Study of quantity of casein present in different samples of milk
• Preparation of soya bean milk and its comparison with the natural milk with respect to curd
formation, effect of temperature ,e.t.c
• To study the effect of potassium bisulphate as food preservative under various conditions.
• Extraction of essential oils present in aniseed, cardamom.
• To study the common food adulterants in fat, oil, butter, sugar ,chilli powder.
• A comparative study of rate of fermentation of wheat flour, gram flour, potato juice e.t.c.
CHAPTER-3(CHEMICAL KINETICS)
1. Diffrentiate between order of reaction and molecularity of reaction.
2. What do you understand by the rate law and rate constant of a reaction?
3. A first order reaction is 20% complete in 10min .Calculate the time for 75% completion of the
reaction.
4. A reaction is of second order with respect to a reactant.How is the rate of the reaction affected if
concentration of the reactant is (i) doubled (ii) reduced to half.
5. What is the order of reaction if rate of reaction is independent of concentration of all the reactants?
6. For the first order chemical reaction half-life period is concentration independent .Justify the
statement by using integrated rate equation.
7. What is the effect of temperature on activation energy?
8. Show that in case of a first order reaction,the time required for 99.9% of the reaction to take place is
about ten times than that required for the reaction.
9. Oxygen is available in plenty in air yet fuels do not burn by themselves at room temperature.Explain.
10. With the help of an example explain what is meant by pseudo first order reaction.
11. For a zero order reaction will the molecularity equal to zero? Explain.
12. For what type of reations, order and molecularity have the same value?
15. What is the order of a reaction that is 50% complete after 2h and 75% complete after 4h?
16. Calculate two-third of a first order reaction having,k=5.48×10-14s-1.
CHAPTER-9(HALOALKANES AND HALOARENES)
1. Discuss the nature of C---X bond in the haloarenes.
2. Write the structures and names of the compounds formed when compound formed when compound
A with molecular formula C7H8is treated with Cl2in the presence of FeCl3.
3. What are ambident nuclephiles? Explain with an example.
4. How methylbromide be prefentially converted to methyl isocyanide?
5. Why is it necessary to avoid even traces of moisture during the use of a Grignard reagent?
6. Give reasons for the following:
(i) Racemic mixture is optically inactive.
(ii) What are enantiomers? Draw the structures of the possible enantiomers of 3-methyl pent -1-ene.
(iii) Reaction of haloalkanes with KCN produces alkyl cyanides as the main product while AgCN produces
isocyanide as the chief product .Explain.
7. Which is a better nucleophile, a bromide ion or an iodide ion and why?
8. Why is iodination of benzene difficult?
9. How can the following conversions be carried out?
(i) Aniline to bromobenzene
(ii) Chlorobenzene to 2-chloroacetophenone
(iii) Chloroethane to butane
10. What happens when
(i) Chlorobenzene is treated with Cl2/FeCl3?
(ii)Ethyl chloride is treated with AgNO2?
(iii) 2-bromopentane is treated with alcoholic KOH
11. Outof o-and p-di bromobenzene which one has higher melting point and why?
12. Illustrate the following name reactions with example:
(i) Sandmeyer’s reaction (ii) Finkelstein reaction (iii) Swarts reaction
13. Give reasons for the following:
(i) Benzyl chloride is highly reactive towards SN1 reaction.
(ii) 2-bromobutane is optically active but 1-bromobutane is optically inactive.
(iii) Electrophilic reactions in haloarenes occur slowly.
(IV) Cyanide ion acts as an ambident nucleophile .From which end it acts as a stronger nuclepphile in
aqueous medium? Give reason for your answer.
CHAPTER-10(ALCOHOLS PHENOLS AND ETHERS)
1. Suggest a reagent for conversion of (i) ethanol to ethanoicacid (ii) ethanol to ethanal.
2. What happen when?
(i) Benzene diazonium chloride is heated.
(ii) Anisole reacts with HI
(iii) Phenol reacts with bromine water.
(iv) Phenol is treated with chloroform in presence of aqueous NaOH.
3. Give reasons for the following:
(i) p-Nitrophenol is more acidic than o-nitro phenol.
(ii) Alcohols and ethers of comparable molecular mass have different boiling points.
(iii)—OH group attached to a carbon of benzene ring activate it towards electrophilic substitution.
4. Explain the mechanism of the following reactions:
(i) Addition of Grignards reagent to the carbonyl group of a compound forming an adduct followed by
hydrolysis.
(ii)Acid catalysed dehydration of an alcohol forming an alkene.
(iii) Acid catalysed hydration of an alkene forming an alcohol.
5. Distinguish between:
(i) Ethanol and phenol
(ii)Propan-2-ol and 2-methyl propan-2-ol
(iii)Methanol and Ethanol
6. Give the reason of the following:
(i) The C—O bond in phenol is slightly stronger than that in methanol.
(ii) Nucleophilic substitution reactions are not very common in phenols
(iii) o-nitrophenol is more volatile than p-nitrophenol.
7. How do you convert the following?
(i) Phenol to anisole
(ii) Aniline to phenol
8. Write the equations involved in the following reactions:
(i) Reimer-Tiemann reaction
(ii) Williamson synthesis
(iii) Kolbe’s reactions
(iv) Friedal-Crafts acetylation of anisoles
9. An organic compound A having molecular formula C6H6O gives a characterstic colour with aqueous
FeCl3 solution. A on treatment with CO2 and NaOH AT 400K under pressure gives B which on acidification
gives a compound C .The compound C reacts with acetyl chloride to give D which is a popular pain killer
.Deduce the structure of A,B,C and D.
10. Why alcohols are less acidic than water?
11. What happens when ethoxyethane is heated with excess of HI?
12. Phenyl methyl ether reacts with HI to give phenol and methy iodide and not iodobenzene and
methyl alcohol .Why?
BIOLOGY:
Do the given assignments
Maths:
Do the given assignments
COMMERCE STREAM
ACCOUNTANCY:
A. Complete any one comprehsive project with GST Questions
Instructions:
(i) Project Should be in your own hand writing.
(ii) No fluid ,cutting, overwriting is allowed.
B.Solve Questions PARTNERSHIP CHANGES IN PSR AND GOODWILL Q.1Prachi, Komal and John were partners in a firm. They admitted Ajay their landlord as a
partner in the firm. Ajay brought sufficient amount of capital and his share of goodwill
premium. Ajay had given a loan of Rs.3,00,000 @ 12% p.a. interest, to the partnership firm
before he became the partner. Now the accountant of the firm is emphasizing that the interest
on loan should be paid @ 6% p.a. Is he right in doing so ? Give reason in support of your
answer.
Q.2 Karan, Nakul and Asha were partners in a firm sharing profits and losses in the ratio 3:2:1.
At the time of admission of partner, the goodwill of the firm was valued at Rs. 2,00,000. The
accountant of the firm passed the entry in the books of accounts and the reafter showed
goodwill at Rs. 2,00,000 as an asset in the Balance Sheet. Was he correct in doing so? Why?
Q.3 Differentiate between ‘Capital Reserve’ and ‘Reserve Capital’ and Profit & Loss account &
Profit Loss Appropriation A/c.
Q.4 Nandan Ltd.’ is a manufacturer of heavy machines in a town of Telangana. It follows high standards of environment safety in the process of manufacturing. The company runs a school to provide quality education and a medical centre to address health issues of the resident of that area. The company is doing well and is going to start a new manufacturing unit in Jharkhand creating livelihood for people, especially those from disadvantaged sections of the society. In order to raise funds the company decided to issue 50,000 shares of Rs.100 each at par and 80,000, 10% debentures of Rs.50 each.Pass necessary journal entries for the issue of shares and
debentures. Also identify any one value which the company wants to communicate to the society. Q.5Ankur and Bobby were into the business of providing software solution in India. They were
sharing profits and losses in the ratio 3:2. They admitted Rohit for a 1/5 share in the firm. Rohit,
an alumni of ITT, Chennai would help them to expand their business to various South African
countries where he had been working earlier. Rohit is guaranteed a minimum profit of Rs.
2,00,000 for the year. Any deficiency in Rohit’s share is to be borne by Ankur and Bobby in the
ratio 4:1. Losses for the year were Rs. 10,00,000. Pass the necessary journal entries.
Q.6 Kanika and Gautam are partners doing a dry cleaning business in Lucknow sharing profits in
the ration 2:1 with capitals Rs. 5,00,000 and Rs. 4,00,000 respectively. Kanika withdrew the
following amounts during the year to pay the hosted expenses of her son. Rs. 1st Aprila - 10,000
1st June - 9,000 1st Nov - 14,000 1st Dec. - 5,000 Gautam withdrew Rs. 15,000 on the first day
of April, July, October and January to pay rent for the accommodation of his family. He also paid
Rs. 20,000 per month as rent for the office of partnership which was in a nearby shipping
complex. Calculate interest on Drawings @6% p.a.
Q.7 Arul, Babu and Caran were partners sharing profits and losses in the ratio of 3:2:1.Their
Capitals as on 31/3/2014 was 30,000; 20,000 and 10,000 respectively. During the middle of the
year they had withdrawn Rs.10,000 each. The partners were given Interest on Capital @6% p.a.
and were charged Interest on drawings @ 2%. The Net Profit before the above adjustments was
Rs.21, 300. Babu was guaranteed a minimum amount of Rs.8,000 as share of profit every year
by Arul and Caran. Show how the profits would be distributed amongst the partners for the
year ended 31/03/2015.
Q. 8 A firm earned profits of Rs. 80,000, Rs. 1,00,000, Rs. 1,20,000 and Rs. 1,80,000 during
2010-11, 2011-12, 2012-13 and 2013-14 respectively. The firm has capital investment of Rs.
5,00,000. A fair rate of return on investment is 15% p.a. Calculate goodwill of the firm based on
three years’ purchase of average super profits of last four years.
Q.9 The average profit earned by a firm is Rs. 1,00,000 which includes undervaluation of stock
of ` Rs.40,000 on an average basis. The capital invested in the business isRs. 6,30,000 and the
normal rate of return is 5%. Calculate goodwill of the firm on the basis of 5 times the super
profit.
Q.10 On March 31st, 2014, the balances in the capital accounts of Raman, Naman and Chaman
after making adjustments for profits and drawings were Rs. 1,60,000, Rs. 1,20,000 and Rs.
1,60,000 respectively. Subsequently it was discovered that interest on capital and drawings had
been omitted. The profit for the year ended 31st March, 2014 was Rs.60,000.
During the year Raman and Naman each withdrew a total sum of Rs. 48,000 in equal
installment in the middle of every month and Chaman withdrew a total sum of Rs. 36,000 in
equal installments at the end of each month.The interest on drawings was to be charged @ 8%
and interest on capital is to be allowed @ 10% p.a. .The profit sharing ratio among the partners
was 1 : 2 : 1. Showing your working notes clearly, pass the necessary rectifying entry.
ECONOMICS: 1.Work on cbse project.
2. Do the given assignments
3. Prepare the selection test syllabus
Do Following questions in assignment copy.
BUSINESS STUDIES:
NATURE AND SIGNIFICANCE OF MANAGEMENT
Q.1 Which force is consisted as the essence of management? Q.2 ‘Doing the task with minimum cost” name the term associated with management? Q.3‘ In order to be successful , an organization must change its goals according to the needs of the environment. Which characteristics of management are highlighted in this statement. Q.4 Which function of management is bridges the gap between where we stand today and where we want to reach? Q.5 Name the function of management which establishes organization structure and establishes authority and responsibility relations? Q.6 In which functions of management standards are compared with actual, deviations are find out and corrective steps are taken? Q.7 ‘Survival profit and growth are essential target of any business’ which objectives of management is referred here? Q.8 ‘Every organization whether it is business or non-business should use environmental methods of production, give employment opportunities and provide basic amenities like schools and crèches to employees’ name the objective of management indicated here? Q.9 The activities involved in managing an enterprise are common to all organizations whether social or political’ which characteristics of management is highlighted by this statement? Q.10 How Management is an intangible force?
Q.11 “Management is an essential for successful running of an enterprise”, How?
Q.12 Father of Mr. ‘Y’ acts as Vice President in ABC Ltd. Name the level of Management he is
working? Explain Any two functions performed by him?
Q.13 Mr. Anil working as a ‘Sales department Head in XYZ Ltd. Name the level of
Management he is working? Explain Any two functions performed by him?
Q.14 ‘Co-ordination’ is the essence of Management’ Explain.
Q.15 “Mgt is Science as well as an art”. Explain this statement.
PRINCIPLES OF MANAGEMENT
Q.1 Why is it said that the principles of management are universal?
Q.2 Why is it said that principles of management are flexible? Q.3 Which principle of management suggests that a subordinate should receive orders from one and be
accountable to one superior? Q.4 Which principle of scientific management suggest the introduction of scientific investigation and analysis of management practice? Q.5 Which principle of management is violated if an employee is asked to receive orders from
two superiors?
Q.6 “Workers should be encouraged to develop and carry out their plans for improvements”. Identify the principle of management formulated by Fayol. Q.7 It has been observed that the prevailing situation in an organization is due to the violations
of the principle of ‘order’. What might have been your observation?
Q.8 Which principle of management is violated when a manager grants one month medical leave to a superior with pay and only one week medical leave to an accountant?
Q1.9 Mohan a manager, expects his colleagues to get work out of subordinates without giving them any powers. Which principle of management is being overlooked and why?
Q .10 Which principle of management aims at securing the loyalty and devotion of the employees by giving them fair and just treatment?
Q.11 Which principle of management envisages that each group of activities having the same objective must have one head and one plan? Explain the principle with suitable example.
Q.12 If an organization does not provide the right place for physical and human recourses in the organization, which principle is violated? What are its consequences?
Q .13 The production manager of an automobile company asked the foreman to achieve a target production of 200 units (Scooters) per day. But he did not give him the authority to requisition tools and materials from the store department. Can the production managers blame the foreman if he is not able to achieve the desire target? Explain briefly the principle relating to the situation.
Q.14 Name and explain that principle of Fayol which suggest that communication from top to bottom should follow the official lines of command?
Q .15 Identify the technique of scientific management which are described by the statement givenbelow:-
i.When specialists supervise each worker.
ii.Change in the attitude of workers and management towards one another. From competition
to Co-operation.
Iii When uniformity is introduced in materials. Machine, tools, method of works and working
conditions after, due research.
BUSINESS ENVIRONMENT
Q 1.Which element / dimension of business environment involves improvement and
innovations which provide new ways of producing goods and services and new methods and
techniques of operating a business.
Q 2. Which environment prohibits the advertisement of alcoholic beverages? Q3. Banking sector reforms have led to easier credit terms and better services. This is an example of a key component of the “Business Environment “ name this component? Q4 .‘Demand for reservation in jobs for minorities refers to an example of key component of general environment of business. Name this component. Q 5. It is the process by which government control over the industry is being loosened. Give the term to which this statement is trying to indicate. Q.6 State the economic reforms since 1991 or new Economics policy. Q7. State the difference between general and specific environment with example. Q8.Explain any five positive effects of liberalization and globalization on business and industry. Q9.Write the impact of changes in government policy on business and industries.
Q10.State the importance of business envioronment. Q.11 Explain the impact of Demonetization on Indian economy.
PLANNING
Qus:1 How does planning provide direction?(Any Three)
Qus:2 The planning function of management is conducted at which level of management ?
Qus:3 One of the functions of management is considered as a base for all other functions.
Name that Function.
Qus:4 : Planning strangulates the initiative of the employees and compels them to work in an
inflexible manner” Discuss
Qus:5 A company needs a detailed plan for its new project- construction of shopping mall.
What type of plan is it?
Qus:6 In which type of plan the sequence to perform a job is determined?
Qus:7 “No Smoking : the statement is related to which type of plan?
Qus:8 Mc Donald does not give its franchise to any other company which is running food
business. This is related to which type of plan?
Qus:9 Name the type of plan which serve as a guide for overall business planning and define the
future state of Affair which the organization strive to realize?
Qus:10 In which step of planning process the planners make prediction and assumptions
regarding future?
Qus:11 Without one function of management the controlling function is not possible. Name the
concerned function.
Qus:12 Planning is an activity which enables a manager to look ahead and anticipate changes.
Mention the benefit of planning highlighted here.
Qus:13 Planning ensures clarity in thoughts and actions, works is carried on smoothly without
interruptions . Which importance of planning is mentioned here.?
Qus:14 It helps the manager to look into future and make a choice amount various alternative
courses of Action enumerate the importance of planning indicate here.
Qus:15 A plan is framed it is implemented and is followed by another plan and so on. Mention
the feature of Planning indicate here?
ORGANISING
Q.1 Name the function of management which co-ordinate the Physical, Financial, and Human
resources and establishes productive relations among them for achievement of specific
goals.
Q.2 Name and explain the two steps in the process of organizing which comes after
identification and division of work and departmentation.
Q.3 Aman Ltd. is manufacturing Toys and has Production Sales, Purchase and finance
Department, which type of organization structure would you suggest to them? State any
three advantage of this organization structure.?
Q.4 Hindustan Ltd. is manufacturing computers, soaps and textile . Which type of
organizational structure would suit the requirement of such organization? State any
three advantages of this organization structure?
Q.5 It is a System of consciously coordinated activities of two or more person towards a
common objectives. Mention this system of organization and explain its two features.
Q. 6 It is a network of personal and social relations not established or required by the formal
organization but arising spontaneously as people associate with one another. Name this
organization and give its three advantages.
Q.7 The directors of Narmada Ltd. An organization manufacturing computer have asked their
marketing manager to achieve a target rate of 100 computers per day. The marketing
manager has delegates the task to his deputy sales manager working under him. The
deputy sales managers could not achieve he target. Is the marketing manager
responsible for the failure of his deputy sales manager? Explain in brief , the relevant
principle in support of your answer.?
Q.8 The Director of Kamal Ltd, an organization manufacturing computer want to double the
sales and given this responsibility to their sales manager. The Sales Manager has no
authority either to increase , sales expense or appoint new salesman. Hence, he could
not achieve this target. Is the sales manager responsible for not achieving the target?
Explain in brief , the relevant principle in support of your answer.?
Q.9 It refer to the systematic delegation of authority from top management to the lower
level managers. Mention the name of it.
Q.10 “If we delegate the authority, we multiply it by two if we decentralize it, we multiply it
by many “ how?
Q.11 The employee of ABC Ltd. Take part in volleyball matches on Sunday. Name the types
of organization formed.
Q.12 “The first Step in the process of organizing is identification and division of work” Why is
he work divided into manageable activities?
Q.13 Explain the three elements of Delegation.
Q.14 A Fashion design house has the following main job:-
(1) Manufacturing (2) Finance (3)Marketing (4) Personal (5) Research and Development
Which organizational structure will you prefer for this type of a company and why?
Q.15 Rina runs a shoe manufacturing factory. She wants to expand her business. For
expansion she contemplated to enter into the manufacturing of leather bags and
western formal wear apart from the running business of shoes. By doing this her
company will be able to provide many products to working women under one roof.
Which organization structure will you suggest her and why?
STAFFING
Q.1. Which function of management helps in obtaining right people and putting them on the
right jobs?
Q.2. It implies introducing the selected employees to other employees and familiarizing him
with the rules and policies of the organization. Name it.
Q.3. “Internal sources of recruitment are better than external sources of recruitment”. Do you
agree with this statement. Give any two reasons in support of your answer.
Q..4 Himesh is working as a supervisor in a company. Due to his hard work he is promoted to
the post of Production Manager. Now the post of supervisor is vacant and no one can be
transferred or promoted to this post. Name the source of recruitment the company will
use to fill up this post. State any three advantages of using this source of recruitment.
OR
Which source of requirement is needed to bring new blood in the organization? Explain
any three advantages of this source.
Q..5 It is the process of identifying and choosing the best person out of a number of prospective
candidates for a job. Name it.
Q..6 Which step in the process of selection helps the manager to eliminate unqualified or unfit
job seekers based on the information supplied in the application forms.
Q..7 It is the process of increasing the knowledge and skills of an employee for doing a
particular job. Which process is refers to here. OR
What helps the employees in improving their job knowledge and efficiency.
Q..8 Which type of training is a joint programme of training in which educational institution and
business firms cooperate?
Q..9 Trainee is put under the guidance of a master worker to require a higher level of skill. For
example to become plumber , electrician etc. Which method of training is referred here.
Q..10 In which type of training , employees learn their jobs on the equipments they will be
using, but the training is conducted away from the actual work floor. Explain two other
methods relating to this.
Q..11“There is no need of human resource planning as so many people are available in the
market these days” do you agree with this statement? Give reasons.
Q..12“ A newly appointed personnel manager is of the view that there is no need for training
the workers”. Do you agree with his views? Give reasons in support of your answer.
HUMANITIES
POLITICAL SCIENCE:Make a project on any of the following topics and prepare a presentation.
1.International organization 2. Rise of popular movement
3.Globalization 4. Environment and natural resources
5.Security in the contemporary world 6. Recent development in Indian politics
HISTORY: . Learn and revise July selection test syllabus.
2. Make a given topic project file.
3. Make PPT on the given project topics.
OPTIONAL SUBJECTS
INFORMATIVE PRACTICES: Project and practical file
COMPUTER SCIENCE:Project and practical file
FINE ARTS:
PRACTICAL
1.Two Coloured Landscape
2. Two Pencil Shading Work
3. One Imagination Beautiful Work
THEORY 1.Revise chap 1,2 and 3
2. Rajasthani,Pahari,Mughal
