CBSE Class 12 Physics Answer Key 2025 and Question Papers, Download PDF All SETs

The CBSE Class 12 Physics Paper 2025 exam was conducted today, February 21, 2025. The exam lasted for 3 hours, conducted from 10:30 am to 1:30 pm, with an additional 15 minutes given for reading the question paper.

Here we are providing a detailed analysis of student responses, expert opinions and the difficulty level of the paper including expected good scores, time-consuming section and longest question.

We have shared the CBSE Class 12 Physics Question Paper 2025 PDF and answer key to help students check their answers and evaluate their performance. Direct link to download CBSE 12th Physics Question Paper 2025 to be avialble on this page.

👉 CBSE Class 12 Physics Question Paper 2025 with Answer Key Set - 1

👉 CBSE Class 12 Physics Question Paper 2025 with Answer Key Set - 2

CBSE 12th Physics Student Review 2025

The details of reviews given by students on CBSE 12th Physics paper are updated here:

"The paper was moderate, with many direct questions from NCERT. Some numerical problems were tricky but manageable with proper time management."
"The difficulty level was balanced. The numerical section had a few tough ones, but theory questions were simple and direct from the textbook."
"Electrostatics and Magnetism had a good number of easy questions, while Optics and Modern Physics were the easiest sections. The numerical problems from Current Electricity required careful calculation."
"The exam had a mix of easy and moderate questions. Some tricky application-based questions were in the last section, but nothing out of the syllabus."

CBSE 12th Physics Exam Analysis 2025

Parameters	CBSE 12th Physics Exam Analysis 2025
Overall difficulty level of the paper	Moderate
Difficulty level of Section A	Easy
Difficulty level of Section B	Moderate
Difficulty level of Section C	Easy to Moderate
Difficulty level of Section D	Easy
Difficulty level of Section E	Moderate
Overall expected good score	50+
Was the overall paper time-consuming?	Theoretical questions from EM Waves, Magnetism & Matter, Atoms, Nuclei, and Semiconductors are straightforward. Numericals on electric circuits and refraction, interference and diffraction. Questions in Section E are the derivations from electrostatics, Moving charges & Magnetism, EMI & AC and Optics. Graphical questions on resistivity, emf, photoelectric effect and potential energy of nucleons
Which section was the lengthiest?	Yes, Section E

Student and Teacher Reactions

Students: Many students expressed relief after completing the exam. While some found the numerical problems challenging, others mentioned that the MCQs and theory-based questions were straightforward. Time management was a key factor, and students who practised previous years' papers found the paper manageable.
Teachers: Educators noted that the exam was well-balanced across all sections, with a good mix of theory and numerical questions. The case-based and assertion-reasoning questions required deep conceptual clarity, making the exam slightly tricky for students who focused only on memorisation. However, all questions were syllabus-based and expected.
Overall, the feedback suggests that students with a strong conceptual understanding and good problem-solving skills could perform well in the exam.

CBSE Class 12 Physics Answer Key 2025

Q1. Two charges -q each are placed at the vertices A and B of an equilateral triangle ABC. If M is the mid-point of AB, the net electric field at C will point along:

(A) CA

(B) CB

(D) CM

Answer: (B) CB

Q2. A student has three resistors, each of resistance R. To obtain a resistance of (2/3)R, she should connect:

(A) All the three resistors in the series

(B) All the three resistors in parallel

(D) Two resistors in parallel and then this combination in series with the third resistor

Answer: (C) Two resistors in series and then this combination in parallel with the third resistor

Q3. A 1 cm straight segment of a conductor carrying 1 A current in the x-direction lies symmetrically at the origin of the Cartesian coordinate system. The magnetic field due to this segment at point (1m, 1m, 0) is:

Answer: (C)

Q4. The magnetic field due to a small magnetic dipole of dipole moment 'M' at a distance 'r' from the centre along the axis of the dipole is given by:

Answer: (A)

Q5. In the figure, X is a coil wound over a hollow wooden pipe.

A permanent magnet is pushed at a constant speed v from the right into the pipe and it comes out at the left end of the pipe. During the entry and the exit of the magnet, the current in the wire YZ will be from:

(A) Y to Z and then Z to Y

(B) Z to Y and then Y to Z

(D) Z to Y and then Z to Y

Answer: (A) Y to Z and then Z to Y

Q6. The alternating current I in an inductor is observed to vary with time t as shown in the graph for a cycle. Which one of the following graphs is the correct representation of the waveform of voltage V with time t?

Answer: (B)

Q7. A transformer is connected to a 200 V AC source. The transformer supplies 3000 V to a device. If the number of turns in the primary coil is 450, then the number of turns in its secondary coil is:

(A) 30

(B) 450

(D) 6750

Answer: (C) 4500

Q8. Which one of the following statements is correct?

(A) Electric field due to static charges is conservative and field lines do not form closed loops.

(B) Electric field due to static charges is conservative and field lines form closed loops.

(D) Electric field due to static charges is non-conservative and field lines form closed loops.

Answer: (A) Electric field due to static charges is conservative and field lines do not form closed loops.

Q9. A tub is filled with a transparent liquid to a height of 30.0 cm. The apparent depth of a coin lying at the bottom of the tub is found to be 16.0 cm. The speed of light in the liquid will be:

(A) 1.6×10⁸ m/s

(B) 2.0×10⁸m/s

(D) 2.5×10⁸m/s

Answer: (B) 2.0×10⁸m/s

Q10. Atomic spectral emission lines of the hydrogen atom are incident on a zinc surface. The lines which can emit photoelectrons from the surface are from:

(A) Balmer series

(B) Paschen series

(D) Neither Balmer, nor Paschen, nor Lyman series

Answer: (C) Lyman series

Q11. The energy of an electron in a hydrogen atom in the ground state is -13.6 eV. Its energy in an orbit corresponding to quantum number n is -0.544 eV. The value of n is:

(A) 2

(B) 3

(D) 5

Answer: (D) 5

Q12. When the resistance measured between p and n ends of a p-n junction diode is high, it can act as a/an:

(A) Resistor

(B) Inductor

(D) Switch

Answer: (C) Capacitor

For Questions 13 to 16, two statements are given - one 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 but Reason (R) is not the correct explanation of Assertion (A).
(C) If Assertion (A) is true but Reason (R) is false.
(D) If both Assertion (A) and Reason (R) are false.

13. Assertion (A): In a semiconductor diode, the thickness of the depletion layer is not fixed.
Reason (R): The thickness of the depletion layer in a semiconductor device depends upon many factors such as the biasing of the semiconductor.

Answer: (A)

14. Assertion (A): In Bohr’s model of the hydrogen atom, the angular momentum of an electron in the n^th orbit is proportional to the square root of its orbit radius r_n.
Reason (R): According to the Bohr model, an electron can jump to its nearest orbits only.

Answer: (C)

15. Assertion (A): Out of infrared and radio waves, the radio waves show more diffraction effect.
Reason (R): Radio waves have greater frequency than infrared waves.

Answer: (C)

16. Assertion (A): In an ideal step-down transformer, the electrical energy is not lost.
Reason (R): In a step-down transformer, voltage decreases but current increases.

Answer: (B)

We will be updating the more answers soon.