CBSE Board Class 12 Physics Answer Key 2024 and Question Papers, Download PDF All SETs

Now, as the exam is over, we bring you post-exam review, paper analysis and student feedback on the difficulty level of CBSE Class 12 Physics exam 2024. Compare your answers with the CBSE Class 12 Physics Question Paper 2024 Solved PDF available on this page.

 👉 CBSE Class 12 Physics Question Paper 2024 with Answer Key

 👉 Download PDF – CBSE Class 12 Physics Exam 2024 Answer Key

CBSE Class 12 Physics Exam 2024 Key Highlights

CBSE Class 12 Physics Paper Analysis 2024

CBSE Class 12 Physics Exam 2024: Student Reactions and Expert Opinion

Student Reactions:

• Many students found the physics exam to be moderately tough.
• Despite extensive preparation, some questions posed challenges.
• Numerical problems were particularly tricky.
• Students made efforts to recall formulas but felt confused during the exam.
• Derivations and practical-based questions required extra brainpower.
• Overall, students considered it a great paper.

Expert Opinion:

• According to experts, the CBSE Class 10 Physics paper was well-balanced and aligned with the syllabus.
• It featured a mix of theoretical and application-based questions.
• Students had the opportunity to demonstrate their understanding of concepts and problem-solving skills.
• The moderate difficulty level allowed well-prepared students to manage the paper effectively.
• Remaining positive and focusing on the next exam is crucial.

CBSE Class 12 Physics Exam 2024 Answer Key

Section – A

Ans .  C

2. Two identical small conducting balls B₁ and B₂ are given -7 pC and + 4 pC charges respectively. They are brought in contact with a third identical ball B₃ and then separated. If the final charge on each ball is -2 PC, the initial charge on B, was

(A) -2 pC
(C) -5 pC
(B) -3 pC
(D) -15 pC

Ans .  B 

3. The quantum nature of light explains the observations on photoelectric effect as-

(A) there is a minimum frequency of incident radiation below which no electrons are emitted.
(B) the maximum kinetic energy of photoelectrons depends only on the frequency of incident radiation.
(C) when the metal surface is illuminated, electrons are ejected from the surface after sometime.
(D) the photoelectric current is independent of the intensity of incident radiation.

Ans.  B

Ans. C

5. A straight wire is kept horizontally along east-west direction. If a steady current flows in wire from east to west, the magnetic field at a point above the wire will point towards.
(A) East
(C) North
(B) West
(D) South

Ans . (C) North

6. The magnetic susceptibility for a diamagnetic material is
(A) small and negative
(B) small and positive
(C) large and negative
(D) large and positive

Ans: (A) small and negative

7. A galvanometer of resistance 100 2 is converted into an ammeter of range (01 A) using a resistance of 0.1 2. The ammeter will show full scale deflection for a current of about

(A) 0.1 mA
(B) 1 mA
(C) 10 mA
(D) 0.1 A

Ans: (D) 0.1 A

Ans. C) R^(3/2)

Ans. (C) 3

Ans. (A) zero

Ans. (C)

Ans.  (C)

Note: For questions number 13 to 16, two statements are given labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes (A), (B), (C) and (D) as given below:

(A) If both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

(B) If both Assertion (A) and Reason (R) are true and Reason (R) is not the correct explanation of Assertion (A).

(C) If Assertion (A) is true and Reason (R) is false.

(D) If both Assertion (A) and Reason (R) are false.

13. Assertion (A): Electrons are ejected from the surface of zinc when it is irradiated by yellow light.

Reason (R): Energy associated with a photon of yellow light is more than the work function of zinc.

Ans:  (C)

14. Assertion (A): The temperature coefficient of resistance is positive for metals and negative for p-type semiconductors.

Reason (R): The charge carriers in metals are negatively charged, whereas the majority charge carriers in p-type semiconductors are positively charged.

Ans: (A)

15. Assertion (A): When electrons drift in a conductor, it does not mean that all free electrons in the conductor are moving in the same direction.

Reason (R): The drift velocity is superposed over large random velocities of electrons.

Ans: (A)

16. Assertion (A): In interference and diffraction of light, light energy reduces in one region producing a dark fringe. It increases in another region and produces a bright fringe.

Reason (R): This happens because energy is not conserved in the phenomena of interference and diffraction.

Ans: (B)

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