CBSE Class 12 Physics 2025 question paper (55/2)

1. A.
   CA
2. B.
   CB
3. C.
   MC
4. D.
   CM

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1. A.
   all the three resistors in series.
2. B.
   all the three resistors in parallel.
3. C.
   two resistors in series and then this combination in parallel with the third resistor.
4. D.
   two resistors in parallel and then this combination in series with the third resistor.

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1. A.
   $1.0 \times 10^{-9}\,\hat{k}$ T
2. B.
   $-1.0 \times 10^{-9}\,\hat{k}$ T
3. C.
   $\frac{5.0}{\sqrt{2}} \times 10^{-10}\,\hat{k}$ T
4. D.
   $-\frac{5.0}{\sqrt{2}} \times 10^{-10}\,\hat{k}$ T

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1. A.
   $\frac{\mu_0}{4\pi} \times \frac{2M}{r^3}$
2. B.
   $\frac{\mu_0}{4\pi} \times \frac{M}{r^3}$
3. C.
   $\frac{\mu_0}{4\pi} \times \frac{M}{2r^3}$
4. D.
   $\frac{\mu_0}{4\pi} \times \frac{2M}{r^2}$

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1. A.
   Y to Z and then Y to Z
2. B.
   Z to Y and then Y to Z
3. C.
   Y to Z and then Z to Y
4. D.
   Z to Y and then Z to Y

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1. A.
2. B.
3. C.
4. D.

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1. A.
   30
2. B.
   450
3. C.
   4500
4. D.
   6750

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1. A.
   conservative and field lines do not form closed loops.
2. B.
   conservative and field lines form closed loops.
3. C.
   non-conservative and field lines do not form closed loops.
4. D.
   non-conservative and field lines form closed loops.

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1. A.
   $1.6 \times 10^{8}\ \mathrm{m\,s^{-1}}$
2. B.
   $2.0 \times 10^{8}\ \mathrm{m\,s^{-1}}$
3. C.
   $3.0 \times 10^{8}\ \mathrm{m\,s^{-1}}$
4. D.
   $2.5 \times 10^{8}\ \mathrm{m\,s^{-1}}$

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1. A.
   Balmer series
2. B.
   Paschen series
3. C.
   Lyman series
4. D.
   Neither Balmer, nor Paschen nor Lyman series

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1. A.
   2
2. B.
   3
3. C.
   4
4. D.
   5

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1. A.
   resistor
2. B.
   inductor
3. C.
   capacitor
4. D.
   switch

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1. A.
   If both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   If both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   If Assertion (A) is true but Reason (R) is false.
4. D.
   If both Assertion (A) and Reason (R) are false.

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1. A.
   If both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   If both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   If Assertion (A) is true but Reason (R) is false.
4. D.
   If both Assertion (A) and Reason (R) are false.

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1. A.
   If both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   If both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   If Assertion (A) is true but Reason (R) is false.
4. D.
   If both Assertion (A) and Reason (R) are false.

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1. A.
   If both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   If both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   If Assertion (A) is true but Reason (R) is false.
4. D.
   If both Assertion (A) and Reason (R) are false.

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1. A.
   E
2. B.
   2E
3. C.
   $\frac{E}{4}$
4. D.
   $\frac{E}{2}$

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1. A.
2. B.
3. C.
4. D.

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1. A.
2. B.
3. C.
4. D.

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1. A.
   $(\vec{E}_1 + \vec{E}_2) \cdot \vec{d}$
2. B.
   $(\vec{E}_1 - \vec{E}_2) \cdot \vec{d}$
3. C.
   $(\vec{E}_2 - \vec{E}_1) \cdot \vec{d}$
4. D.
   $\frac{d(E_1 + E_2)}{2}$

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1. A.
   C
2. B.
   $\frac{C}{K}$
3. C.
   CK
4. D.
   $C\left(1 + \frac{1}{K}\right)$

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1. A.
   coincide each other.
2. B.
   are parallel to each other.
3. C.
   are not parallel to each other and cross at a point on $\nu$-axis.
4. D.
   are not parallel to each other and do not cross at a point on $\nu$-axis.

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1. A.
   $\frac{e}{m}$
2. B.
   $\frac{1}{me}$
3. C.
   me
4. D.
   $\frac{m}{e}$

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1. A.
   $\nu_0,\ \frac{h\nu_0}{e}$
2. B.
   $\nu_0,\ h\nu_0$
3. C.
   $\frac{h\nu_0}{e},\ \nu_0$
4. D.
   $h\nu_0,\ \nu_0$

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1. A.
   $2,\ \frac{1}{2}$
2. B.
   $\frac{1}{2},\ \frac{1}{2}$
3. C.
   $\frac{1}{2},\ 2$
4. D.
   2, 2

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1. A.
   $1.33\ \mu\mathrm{m}$
2. B.
   $3.3\ \mu\mathrm{m}$
3. C.
   $16.6\ \mu\mathrm{m}$
4. D.
   $13.3\ \mu\mathrm{m}$

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1. A.
   >E
2. B.
   E
3. C.
   $\frac{E}{2}$
4. D.
   zero

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1. A.
   1.05
2. B.
   1
3. C.
   0.95
4. D.
   1.1

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1. A.
2. B.
3. C.
4. D.

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1. A.
   repelled by north pole and attracted by south pole.
2. B.
   attracted by north pole and repelled by south pole.
3. C.
   attracted by north pole as well as by south pole.
4. D.
   repelled by north pole as well as by south pole.

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1. A.
   $\frac{n_1}{n_2}$
2. B.
   $\frac{n_2}{n_1}$
3. C.
   $\frac{n_1 r_1^2}{n_2 r_2^2}$
4. D.
   $\frac{n_2 r_1^2}{n_1 r_2^2}$

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1. A.
   $1.0 \times 10^{-9}\,\hat{k}$ T
2. B.
   $-1.0 \times 10^{-9}\,\hat{k}$ T
3. C.
   $\frac{5.0}{\sqrt{2}} \times 10^{-10}\,\hat{k}$ T
4. D.
   $-\frac{5.0}{\sqrt{2}} \times 10^{-10}\,\hat{k}$ T

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1. A.
   0.31 V
2. B.
   0.20 V
3. C.
   0.63 V
4. D.
   0.10 V

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1. A.
   Balmer series
2. B.
   Paschen series
3. C.
   Lyman series
4. D.
   Neither Balmer, nor Paschen nor Lyman series

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1. A.
   $\frac{5}{3}$ f
2. B.
   $\frac{3}{5}$ f
3. C.
   $\frac{2}{3}$ f
4. D.
   f

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1. A.
   conservative and field lines do not form closed loops.
2. B.
   conservative and field lines form closed loops.
3. C.
   non-conservative and field lines do not form closed loops.
4. D.
   non-conservative and field lines form closed loops.

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1. A.
   resistor
2. B.
   inductor
3. C.
   capacitor
4. D.
   switch

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1. A.
   2
2. B.
   3
3. C.
   4
4. D.
   5

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1. A.
   If both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   If both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   If Assertion (A) is true but Reason (R) is false.
4. D.
   If both Assertion (A) and Reason (R) are false.

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1. A.
   If both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   If both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   If Assertion (A) is true but Reason (R) is false.
4. D.
   If both Assertion (A) and Reason (R) are false.

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1. A.
   If both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   If both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   If Assertion (A) is true but Reason (R) is false.
4. D.
   If both Assertion (A) and Reason (R) are false.

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1. A.
   If both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   If both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   If Assertion (A) is true but Reason (R) is false.
4. D.
   If both Assertion (A) and Reason (R) are false.

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1. A.
   coincide each other.
2. B.
   are parallel to each other.
3. C.
   are not parallel to each other and cross at a point on $\nu$-axis.
4. D.
   are not parallel to each other and do not cross at a point on $\nu$-axis.

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1. A.
   $\frac{e}{m}$
2. B.
   $\frac{1}{me}$
3. C.
   me
4. D.
   $\frac{m}{e}$

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1. A.
   $\nu_0,\ \frac{h\nu_0}{e}$
2. B.
   $\nu_0,\ h\nu_0$
3. C.
   $\frac{h\nu_0}{e},\ \nu_0$
4. D.
   $h\nu_0,\ \nu_0$

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1. A.
   $2,\ \frac{1}{2}$
2. B.
   $\frac{1}{2},\ \frac{1}{2}$
3. C.
   $\frac{1}{2},\ 2$
4. D.
   2, 2

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1. A.
   $1.33\ \mu\mathrm{m}$
2. B.
   $3.3\ \mu\mathrm{m}$
3. C.
   $16.6\ \mu\mathrm{m}$
4. D.
   $13.3\ \mu\mathrm{m}$

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1. A.
   E
2. B.
   2E
3. C.
   $\frac{E}{4}$
4. D.
   $\frac{E}{2}$

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1. A.
2. B.
3. C.
4. D.

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1. A.
2. B.
3. C.
4. D.

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1. A.
   $(\vec{E}_1 + \vec{E}_2) \cdot \vec{d}$
2. B.
   $(\vec{E}_1 - \vec{E}_2) \cdot \vec{d}$
3. C.
   $(\vec{E}_2 - \vec{E}_1) \cdot \vec{d}$
4. D.
   $\frac{d(E_1 + E_2)}{2}$

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1. A.
   C
2. B.
   $\frac{C}{K}$
3. C.
   CK
4. D.
   $C\left(1 + \frac{1}{K}\right)$

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1. A.
   $qa(\hat{i} + \hat{j})$
2. B.
   $-qa(\hat{i} + \hat{j})$
3. C.
   $qa(\hat{i} - \hat{j})$
4. D.
   $-qa(\hat{i} - \hat{j})$

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1. A.
   12.0 V, 2.0 A
2. B.
   2.0 V, 0.5 A
3. C.
   6.0 V, 2.0 A
4. D.
   12 V, 0.5 A

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1. A.
   conservative and field lines do not form closed loops.
2. B.
   conservative and field lines form closed loops.
3. C.
   non-conservative and field lines do not form closed loops.
4. D.
   non-conservative and field lines form closed loops.

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1. A.
   non-magnetic
2. B.
   diamagnetic
3. C.
   paramagnetic
4. D.
   ferromagnetic

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1. A.
   clockwise current
2. B.
   anticlockwise current
3. C.
   alternating current
4. D.
   zero

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1. A.
   $1.0 \times 10^{-9}\,\hat{k}$ T
2. B.
   $-1.0 \times 10^{-9}\,\hat{k}$ T
3. C.
   $\frac{5.0}{\sqrt{2}} \times 10^{-10}\,\hat{k}$ T
4. D.
   $-\frac{5.0}{\sqrt{2}} \times 10^{-10}\,\hat{k}$ T

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1. A.
   P and Q
2. B.
   Q and S
3. C.
   P and R
4. D.
   P and S

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1. A.
2. B.
3. C.
4. D.

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1. A.
   $\frac{R}{n}$
2. B.
   $\frac{R}{(n - 1)}$
3. C.
   nR
4. D.
   $\frac{R}{2(n - 1)}$

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1. A.
   resistor
2. B.
   inductor
3. C.
   capacitor
4. D.
   switch

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1. A.
   Balmer series
2. B.
   Paschen series
3. C.
   Lyman series
4. D.
   Neither Balmer, nor Paschen nor Lyman series

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1. A.
   2
2. B.
   3
3. C.
   4
4. D.
   5

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1. A.
   If both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   If both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   If Assertion (A) is true but Reason (R) is false.
4. D.
   If both Assertion (A) and Reason (R) are false.

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1. A.
   If both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   If both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   If Assertion (A) is true but Reason (R) is false.
4. D.
   If both Assertion (A) and Reason (R) are false.

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1. A.
   If both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   If both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   If Assertion (A) is true but Reason (R) is false.
4. D.
   If both Assertion (A) and Reason (R) are false.

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1. A.
   If both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   If both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   If Assertion (A) is true but Reason (R) is false.
4. D.
   If both Assertion (A) and Reason (R) are false.

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1. A.
   coincide each other.
2. B.
   are parallel to each other.
3. C.
   are not parallel to each other and cross at a point on $\nu$-axis.
4. D.
   are not parallel to each other and do not cross at a point on $\nu$-axis.

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1. A.
   $\frac{e}{m}$
2. B.
   $\frac{1}{me}$
3. C.
   me
4. D.
   $\frac{m}{e}$

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1. A.
   $\nu_0,\ \frac{h\nu_0}{e}$
2. B.
   $\nu_0,\ h\nu_0$
3. C.
   $\frac{h\nu_0}{e},\ \nu_0$
4. D.
   $h\nu_0,\ \nu_0$

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1. A.
   $2,\ \frac{1}{2}$
2. B.
   $\frac{1}{2},\ \frac{1}{2}$
3. C.
   $\frac{1}{2},\ 2$
4. D.
   2, 2

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1. A.
   $1.33\ \mu\mathrm{m}$
2. B.
   $3.3\ \mu\mathrm{m}$
3. C.
   $16.6\ \mu\mathrm{m}$
4. D.
   $13.3\ \mu\mathrm{m}$

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1. A.
   E
2. B.
   2E
3. C.
   $\frac{E}{4}$
4. D.
   $\frac{E}{2}$

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1. A.
2. B.
3. C.
4. D.

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1. A.
2. B.
3. C.
4. D.

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1. A.
   $(\vec{E}_1 + \vec{E}_2) \cdot \vec{d}$
2. B.
   $(\vec{E}_1 - \vec{E}_2) \cdot \vec{d}$
3. C.
   $(\vec{E}_2 - \vec{E}_1) \cdot \vec{d}$
4. D.
   $\frac{d(E_1 + E_2)}{2}$

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1. A.
   C
2. B.
   $\frac{C}{K}$
3. C.
   CK
4. D.
   $C\left(1 + \frac{1}{K}\right)$

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