CBSE Class 12 Physics 2024 question paper (55/3)

1. A.
   Plane
2. B.
   Spherical surface
3. C.
   Paraboloidal surface
4. D.
   Ellipsoidal surface

Tap an option to check your answer.

1. A.
   $-\,1{\cdot}6 \times 10^{-18}$ J
2. B.
   $1{\cdot}6 \times 10^{-18}$ J
3. C.
   Zero
4. D.
   $0{\cdot}8 \times 10^{-18}$ J

Tap an option to check your answer.

1. A.
   $(0{\cdot}12\ \mathrm{nT})\ \hat{j}$
2. B.
   $-\,(0{\cdot}10\ \mathrm{nT})\ \hat{j}$
3. C.
   $-\,(0{\cdot}24\ \mathrm{nT})\ \hat{k}$
4. D.
   $(0{\cdot}24\ \mathrm{nT})\ \hat{k}$

Tap an option to check your answer.

1. A.
   move along x-axis
2. B.
   move along $-$ y-axis
3. C.
   move along z-axis
4. D.
   remain stationary

Tap an option to check your answer.

1. A.
   $-\,0{\cdot}3$ MB
2. B.
   $0{\cdot}3$ MB
3. C.
   $-\,1{\cdot}7$ MB
4. D.
   $1{\cdot}7$ MB

Tap an option to check your answer.

1. A.
   $22{\cdot}5$ V
2. B.
   $17{\cdot}5$ V
3. C.
   $15{\cdot}0$ V
4. D.
   $12{\cdot}5$ V

Tap an option to check your answer.

1. A.
   both $l$ and A are increased
2. B.
   $l$ is decreased and A is increased
3. C.
   $l$ is increased and A is decreased
4. D.
   both $l$ and A are decreased

Tap an option to check your answer.

1. A.
   Infrared rays
2. B.
   Gamma rays
3. C.
   Radio waves
4. D.
   Microwaves

Tap an option to check your answer.

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

Tap an option to check your answer.

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

Tap an option to check your answer.

1. A.
   increases by $87{\cdot}5\%$
2. B.
   decreases by $87{\cdot}5\%$
3. C.
   increases by $43{\cdot}75\%$
4. D.
   decreases by $43{\cdot}75\%$

Tap an option to check your answer.

1. A.
   $0{\cdot}01$ eV
2. B.
   $0{\cdot}05$ eV
3. C.
   $0{\cdot}72$ eV
4. D.
   $1{\cdot}1$ eV

Tap an option to check your answer.

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

Tap an option to check your answer.

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

Tap an option to check your answer.

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

Tap an option to check your answer.

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

Tap an option to check your answer.

1. A.
   I
2. B.
   II
3. C.
   III
4. D.
   IV

Tap an option to check your answer.

1. A.
   move along $\hat{i}$ at constant speed
2. B.
   move along $-\,\hat{i}$ at constant speed
3. C.
   accelerate along $\hat{i}$
4. D.
   accelerate along $-\,\hat{i}$

Tap an option to check your answer.

1. A.
   $V = V_0 + \alpha\,x$
2. B.
   $V = V_0 + \alpha\,x^{2}$
3. C.
   $V = V_0 + \alpha\,x^{1/2}$
4. D.
   $V = V_0 + \alpha\,x^{3/2}$

Tap an option to check your answer.

1. A.
   $E_1 > E_2 > E_3 > E_4$
2. B.
   $E_3 > E_4 > E_1 > E_2$
3. C.
   $E_4 > E_3 > E_2 > E_1$
4. D.
   $E_2 > E_3 > E_4 > E_1$

Tap an option to check your answer.

1. A.
   $1{\cdot}3 \times 10^{5}$ m/s
2. B.
   $2{\cdot}6 \times 10^{6}$ m/s
3. C.
   $6{\cdot}5 \times 10^{5}$ m/s
4. D.
   $5{\cdot}2 \times 10^{7}$ m/s

Tap an option to check your answer.

1. A.
   2
2. B.
   3
3. C.
   4
4. D.
   6

Tap an option to check your answer.

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

Tap an option to check your answer.

1. A.
   2
2. B.
   4
3. C.
   6
4. D.
   9

Tap an option to check your answer.

1. A.
   $\sin^{-1}\,(0{\cdot}12)$
2. B.
   $\sin^{-1}\,(0{\cdot}225)$
3. C.
   $\sin^{-1}\,(0{\cdot}32)$
4. D.
   $\sin^{-1}\,(0{\cdot}45)$

Tap an option to check your answer.

1. A.
   2
2. B.
   3
3. C.
   6
4. D.
   10

Tap an option to check your answer.

1. A.
   0 and Q
2. B.
   $-\,q$ and Q $-$ q
3. C.
   $-\,q$ and Q + q
4. D.
   0 and Q $-$ q

Tap an option to check your answer.

1. A.
   $-\,1{\cdot}6 \times 10^{-18}$ J
2. B.
   $1{\cdot}6 \times 10^{-18}$ J
3. C.
   Zero
4. D.
   $0{\cdot}8 \times 10^{-18}$ J

Tap an option to check your answer.

1. A.
   $(0{\cdot}12\ \mathrm{nT})\ \hat{j}$
2. B.
   $-\,(0{\cdot}10\ \mathrm{nT})\ \hat{j}$
3. C.
   $-\,(0{\cdot}24\ \mathrm{nT})\ \hat{k}$
4. D.
   $(0{\cdot}24\ \mathrm{nT})\ \hat{k}$

Tap an option to check your answer.

1. A.
   Repel each other with a force $\dfrac{\mu_0 I^2}{2\pi a^2}$, per unit length.
2. B.
   Attract each other with a force $\dfrac{\mu_0 I^2}{2\pi a^2}$, per unit length.
3. C.
   Attract each other with a force $\dfrac{\mu_0 I^2}{2\pi a}$, per unit length.
4. D.
   Repel each other with a force $\dfrac{\mu_0 I^2}{2\pi a}$, per unit length.

Tap an option to check your answer.

1. A.
   $-\,0{\cdot}3$ MB
2. B.
   $0{\cdot}3$ MB
3. C.
   $-\,1{\cdot}7$ MB
4. D.
   $1{\cdot}7$ MB

Tap an option to check your answer.

1. A.
   $4{\cdot}0$ C
2. B.
   $1{\cdot}5$ C
3. C.
   $0{\cdot}05$ C
4. D.
   $0{\cdot}1$ C

Tap an option to check your answer.

1. A.
   both $l$ and A are increased
2. B.
   $l$ is decreased and A is increased
3. C.
   $l$ is increased and A is decreased
4. D.
   both $l$ and A are decreased

Tap an option to check your answer.

1. A.
   Infrared rays
2. B.
   Ultraviolet rays
3. C.
   X-rays
4. D.
   Gamma rays

Tap an option to check your answer.

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

Tap an option to check your answer.

1. A.
   $\phi_1 > \phi_2 > \phi_3$
2. B.
   $\phi_2 > \phi_3 > \phi_1$
3. C.
   $\phi_3 > \phi_2 > \phi_1$
4. D.
   $\phi_2 > \phi_1 > \phi_3$

Tap an option to check your answer.

1. A.
   increases by $87{\cdot}5\%$
2. B.
   decreases by $87{\cdot}5\%$
3. C.
   increases by $43{\cdot}75\%$
4. D.
   decreases by $43{\cdot}75\%$

Tap an option to check your answer.

1. A.
   $0{\cdot}01$ eV
2. B.
   $0{\cdot}05$ eV
3. C.
   $0{\cdot}72$ eV
4. D.
   $1{\cdot}1$ eV

Tap an option to check your answer.

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

Tap an option to check your answer.

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

Tap an option to check your answer.

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

Tap an option to check your answer.

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

Tap an option to check your answer.

1. A.
   I
2. B.
   II
3. C.
   III
4. D.
   IV

Tap an option to check your answer.

1. A.
   move along $\hat{i}$ at constant speed
2. B.
   move along $-\,\hat{i}$ at constant speed
3. C.
   accelerate along $\hat{i}$
4. D.
   accelerate along $-\,\hat{i}$

Tap an option to check your answer.

1. A.
   $V = V_0 + \alpha\,x$
2. B.
   $V = V_0 + \alpha\,x^{2}$
3. C.
   $V = V_0 + \alpha\,x^{1/2}$
4. D.
   $V = V_0 + \alpha\,x^{3/2}$

Tap an option to check your answer.

1. A.
   $E_1 > E_2 > E_3 > E_4$
2. B.
   $E_3 > E_4 > E_1 > E_2$
3. C.
   $E_4 > E_3 > E_2 > E_1$
4. D.
   $E_2 > E_3 > E_4 > E_1$

Tap an option to check your answer.

1. A.
   $1{\cdot}3 \times 10^{5}$ m/s
2. B.
   $2{\cdot}6 \times 10^{6}$ m/s
3. C.
   $6{\cdot}5 \times 10^{5}$ m/s
4. D.
   $5{\cdot}2 \times 10^{7}$ m/s

Tap an option to check your answer.

1. A.
   2
2. B.
   3
3. C.
   4
4. D.
   6

Tap an option to check your answer.

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

Tap an option to check your answer.

1. A.
   2
2. B.
   4
3. C.
   6
4. D.
   9

Tap an option to check your answer.

1. A.
   $\sin^{-1}\,(0{\cdot}12)$
2. B.
   $\sin^{-1}\,(0{\cdot}225)$
3. C.
   $\sin^{-1}\,(0{\cdot}32)$
4. D.
   $\sin^{-1}\,(0{\cdot}45)$

Tap an option to check your answer.

1. A.
   2
2. B.
   3
3. C.
   6
4. D.
   10

Tap an option to check your answer.

1. A.
   $0{\cdot}02$ mC
2. B.
   $0{\cdot}1$ mC
3. C.
   $0{\cdot}1\ \mu$C
4. D.
   1 $\mu$C

Tap an option to check your answer.

1. A.
   $-\,1{\cdot}6 \times 10^{-18}$ J
2. B.
   $1{\cdot}6 \times 10^{-18}$ J
3. C.
   Zero
4. D.
   $0{\cdot}8 \times 10^{-18}$ J

Tap an option to check your answer.

1. A.
   $(0{\cdot}12\ \mathrm{nT})\ \hat{j}$
2. B.
   $-\,(0{\cdot}10\ \mathrm{nT})\ \hat{j}$
3. C.
   $-\,(0{\cdot}24\ \mathrm{nT})\ \hat{k}$
4. D.
   $(0{\cdot}24\ \mathrm{nT})\ \hat{k}$

Tap an option to check your answer.

1. A.
   Gadolinium
2. B.
   Sodium
3. C.
   Copper chloride
4. D.
   Sodium chloride

Tap an option to check your answer.

1. A.
   $-\,0{\cdot}3$ MB
2. B.
   $0{\cdot}3$ MB
3. C.
   $-\,1{\cdot}7$ MB
4. D.
   $1{\cdot}7$ MB

Tap an option to check your answer.

1. A.
   157 V
2. B.
   $\dfrac{157}{\sqrt{2}}$ V
3. C.
   $78{\cdot}5$ V
4. D.
   100 V

Tap an option to check your answer.

1. A.
   both $l$ and A are increased
2. B.
   $l$ is decreased and A is increased
3. C.
   $l$ is increased and A is decreased
4. D.
   both $l$ and A are decreased

Tap an option to check your answer.

1. A.
   + z direction and in phase with $\vec{E}$
2. B.
   $-$ z direction and in phase with $\vec{E}$
3. C.
   + z direction and out of phase with $\vec{E}$
4. D.
   $-$ z direction and out of phase with $\vec{E}$

Tap an option to check your answer.

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

Tap an option to check your answer.