KHAITAN PUBLIC SCHOOL, SAHIBABAD
SESSION: 2025-26
SUBJECT- PHYSICS (042)
CLASS – XII
TERM-1 EXAMINATION
SET-B
TIME: 3 hrs. M.M: 70
General Instruction:
(1) There are 33 questions in all. All questions are compulsory.
(2) This question paper has five sections: Section A, Section B, Section C, Section D and Section E.
(3) All the sections are compulsory.
(4) Section A contains sixteen questions, twelve MCQ and four assertion reasoning based of 1 mark
each, Section B contains five questions of two marks each, Section C contains seven questions of
three marks each, Section D contains three long answer questions of five marks each and Section E
contains two case study-based questions of four marks each.
(5) There is no overall choice. However, an internal choice has been provided. You have to attempt
only one of the choices in such questions.
(6) Use of calculators is not allowed.
Section – A
All questions are compulsory (1mark each). In case of internal choices, attempt any one of them.)
1. A parallel plate air capacitor is charged to a potential difference of V volts. After disconnecting the 1
charging battery the distance between the plates of capacitor is increased using an insulating handle. As a
result the potential difference between the plates:
a) Increases b) decreases c) does not change d) becomes zero
2. The magnetic moment associated with a circular coil of 35 turns and radius 25cm, if it carries a current of 1
11 A is:
a) 72.2 Am2 b) 70.5 Am2 c) 74.56 Am2 d) 75.56 Am2
3. A circular loop of radius R carrying a current I is placed in a uniform magnetic field B perpendicular to 1
the loop. The force on the loop is:
a) 2πRIB b) 2πRI2B3 c) πR2IB d) zero
4. Two parallel infinite line charges +λ and –λ are placed with a separation distance R in free space. The net 1
electric field exactly mid-way between the two line charges is:
2λ λ λ
a) Zero b) c) d)
πεR πεR 2 πεR
5. A conducting circular loop is placed in a uniform magnetic field, B = 0.025 T with its plane 1
perpendicular to the loop. The radius of the loop is made to shrink at a constant rate of 1mm/s. The
induced emf when the radius is 2cm , is:
a) 2π μ V b) π μ V c) 0.5 π μ V d) 2 μ V
6. The permeability of iron is 6000. Its magnetic susceptibility is: 1
a) 5999 b) 6001 c) 6000 x 10-7 d) 6000 x 107
7. 200 V ac source is fed to series LCR circuit having XL= 50Ω, XC = 50 Ω and R= 25 Ω. Potential drop 1
across the inductor is:
a) 100 V b) 200 V c) 400 V d) 10V
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, 8. A current carrying loop is placed in a uniform magnetic field in four different orientations as shown in 1
figure. Arrange them in the decreasing order of potential energy:
a) 4,2,3,1 b) 1,4,2,3 c) 4,3,2,1 d) 1,2,3,4
9. Consider a neutral conducting sphere. A positive point charge is placed outside the sphere. 1
The net charge on the sphere is then,
(a) Negative and distributed uniformly over the surface of the sphere.
(b) Negative and appears only at the point on the sphere closest to the point charge.
(c) Negative and distributed non-uniformly over the entire surface of the sphere.
(d) Zero
10. In the series L-C-R circuit, the voltmeter and ammeter readings are: 1
a) V = 100 Volts, I = 2A (b) V = 100 Volts, I = 5A
c) V = 1000 Volts, I = 2A (d) V = 300 Volts, I = 1A
11. Current ‘I’ is increasing at a steady rate in the wire shown in the fig. Direction of induced current in the 1
loop is:
a) Anticlockwise b) clockwise (c) No induced current (d) none of above
12. A cell having an emf E and internal resistance r is connected across a variable external resistance R. As 1
the resistance R is increased, the plot of potential difference V across R is given by:
2 | Page
SESSION: 2025-26
SUBJECT- PHYSICS (042)
CLASS – XII
TERM-1 EXAMINATION
SET-B
TIME: 3 hrs. M.M: 70
General Instruction:
(1) There are 33 questions in all. All questions are compulsory.
(2) This question paper has five sections: Section A, Section B, Section C, Section D and Section E.
(3) All the sections are compulsory.
(4) Section A contains sixteen questions, twelve MCQ and four assertion reasoning based of 1 mark
each, Section B contains five questions of two marks each, Section C contains seven questions of
three marks each, Section D contains three long answer questions of five marks each and Section E
contains two case study-based questions of four marks each.
(5) There is no overall choice. However, an internal choice has been provided. You have to attempt
only one of the choices in such questions.
(6) Use of calculators is not allowed.
Section – A
All questions are compulsory (1mark each). In case of internal choices, attempt any one of them.)
1. A parallel plate air capacitor is charged to a potential difference of V volts. After disconnecting the 1
charging battery the distance between the plates of capacitor is increased using an insulating handle. As a
result the potential difference between the plates:
a) Increases b) decreases c) does not change d) becomes zero
2. The magnetic moment associated with a circular coil of 35 turns and radius 25cm, if it carries a current of 1
11 A is:
a) 72.2 Am2 b) 70.5 Am2 c) 74.56 Am2 d) 75.56 Am2
3. A circular loop of radius R carrying a current I is placed in a uniform magnetic field B perpendicular to 1
the loop. The force on the loop is:
a) 2πRIB b) 2πRI2B3 c) πR2IB d) zero
4. Two parallel infinite line charges +λ and –λ are placed with a separation distance R in free space. The net 1
electric field exactly mid-way between the two line charges is:
2λ λ λ
a) Zero b) c) d)
πεR πεR 2 πεR
5. A conducting circular loop is placed in a uniform magnetic field, B = 0.025 T with its plane 1
perpendicular to the loop. The radius of the loop is made to shrink at a constant rate of 1mm/s. The
induced emf when the radius is 2cm , is:
a) 2π μ V b) π μ V c) 0.5 π μ V d) 2 μ V
6. The permeability of iron is 6000. Its magnetic susceptibility is: 1
a) 5999 b) 6001 c) 6000 x 10-7 d) 6000 x 107
7. 200 V ac source is fed to series LCR circuit having XL= 50Ω, XC = 50 Ω and R= 25 Ω. Potential drop 1
across the inductor is:
a) 100 V b) 200 V c) 400 V d) 10V
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, 8. A current carrying loop is placed in a uniform magnetic field in four different orientations as shown in 1
figure. Arrange them in the decreasing order of potential energy:
a) 4,2,3,1 b) 1,4,2,3 c) 4,3,2,1 d) 1,2,3,4
9. Consider a neutral conducting sphere. A positive point charge is placed outside the sphere. 1
The net charge on the sphere is then,
(a) Negative and distributed uniformly over the surface of the sphere.
(b) Negative and appears only at the point on the sphere closest to the point charge.
(c) Negative and distributed non-uniformly over the entire surface of the sphere.
(d) Zero
10. In the series L-C-R circuit, the voltmeter and ammeter readings are: 1
a) V = 100 Volts, I = 2A (b) V = 100 Volts, I = 5A
c) V = 1000 Volts, I = 2A (d) V = 300 Volts, I = 1A
11. Current ‘I’ is increasing at a steady rate in the wire shown in the fig. Direction of induced current in the 1
loop is:
a) Anticlockwise b) clockwise (c) No induced current (d) none of above
12. A cell having an emf E and internal resistance r is connected across a variable external resistance R. As 1
the resistance R is increased, the plot of potential difference V across R is given by:
2 | Page
