Where can I download the CBSE Class 12 Physics board exam answers 2025?

Students can download the CBSE Class 12 physics answer key 2025 for all question paper sets in the article above.

CBSE Class 12 Physics Answer Key 2025 OUT For All Sets, Download PDF for Free

Table of Contents

The Central Board of Secondary Education has successfully concluded the Class 12 Physics Examination Today February 21, 2025. Students who appeared in the said examination are now keenly looking for the CBSE Class 12 Physics Answer Key 2025 on the internet. We at Adda247, our in-house experts are continuously evaluating the CBSE Class 12 Physics Question Paper 2025 for all sets one by one. Students are recommended to stay tuned on the page and keep refreshing as the CBSE Class 12th Physics Answer Key 2025 for SET 1, 2, and 3 is updated here.

CBSE Class 12 Physics Answer Key 2025 Out

The CBSE Class 12 Physics Examination was held for three hours starting from 10:30 to 01:30 P.M. Physics is considered one of the most tough subjects among students due to its complexity. After coming out from the exam center, students might be anxious about the marked answers whether they are correct or wrong. For the convenience of the students, we share CBSE Class 12 Physics Answer Key 2025 For All Sets ensuring they can access all in one place. Along with the CBSE Class 12 Physics Question Paper 2025 with solutions, we also share the first reaction of the test takers and subject matter experts on this page. Stay tuned with us.

CBSE Class 12th Physics Answer Key 2025 SET 1

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 ‘ at a distance ‘r’ from the centre along the axis of the dipole is given by:

CBSE Class 12 Physics Answer Key 2025

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)

(B) m/s

(D) m/s

Answer: (B) m/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 is -0.544 eV. The value of 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 $n^{t h}$ orbit is proportional to the square root of its orbit radius .
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)

CBSE Class 12 Physics Answer Key 2025 SET 2

Check the answer key for the CBSE class 12 physics paper set 2 (55/4/2 set no.) below.

Ans: 5

2. The Electronic Magnetic Waves used in Radar System are:

Ans: Microwaves

3. In Young’s double-slit experiment, the fringe width is found to be β. If the entire apparatus is immersed in a liquid of refractive index µ, the new fringe width will be:

Ans: β/µ

4. Photons of energy 4.3 eV are incident on a photosensitive surface of work function 2.3 eV. The stopping potential for photoelectrons is:
Answer: 2.3 eV

5. Which of the following statements is not true for nuclear forces?
(a) They are stronger than Coulomb forces.
(b) They have about the same magnitude for different pairs of nucleons.
(c) They are always attractive.
(d) They saturate as the separation between two nucleons increases.
A: They have about the same magnitude for different pairs of nucleons.

6. A point charge q is kept at a distance r from an infinitely long straight wire with charge density λ. The magnitude of the electrostatic force experienced by charge q is:
Answer: qλ/2πE0r

7. The ratio of the magnitude of magnetic moment to that of angular momentum, of an electron revolving around the nucleus in a hydrogen atom is:
A: Zero

8. Which one of the following has negative value of susceptibility?

Answer: Lead

9. The difference in mass of X^7 nucleus and total mass of its constituent nucleons is 21.00 u. The binding energy per nucleon for this nucleus is equal to the energy equivalent of:
Answer: 3.5 u

10.

Ans: Reverse biasing, current= 2 mA

CBSE Class 12 Physics Answer Key 2025 Set 3

The CBSE Class 12th Physics answer key 2025 for Set 3 (QP Code: 55/2/3) has been provided below

Q. No.	Question (QP Code: 55/2/3)	Answers
1	Consider two identical dipoles D 1 and D 2 . Charges -q and q of dipole D 1 are located at (0, 0) and (a, 0) and that of dipole D 2 at (0, a) and (0, 2a) in x-y plane, respectively. The net dipole moment of the system is:	qa(î + ĵ)
2	Which pair of readings of ideal voltmeter and ideal ammeter in the given circuit is possible when a suitable power source of 3 Ω internal resistance is connected between P and Q?	2.0 V, 0.5 A
3	Which one of the following statements is correct? Electric field due to static charges is (A) conservative and field lines do not form closed loops. (B) conservative and field lines form closed loops. (C) non-conservative and field lines do not form closed loops. (D) non-conservative and field lines form closed loops.	non-conservative and field lines do not form closed loops.
4	A material pushed out when placed in a uniform magnetic field. The material is:	Paramagnetic
5	A soft iron rod X is allowed to fall on the two poles of a U shaped permanent magnet as shown in figure. A coil is wrapped over one arm of the U shaped magnet. During the fall of the rod, the current in the coil will be:	Clockwise Current
6	A 1 cm straight segment of a conductor carrying 1 A current in x direction lies symmetrically at origin of Cartesian coordinate system. The magnetic field due to this segment at point (1m, 1m, 0) is	-1.0 * 10 -9 k̂ T
7	The number of turns between different pairs of output terminals are shown for a step-up transformer. Input voltage of 20 V is applied between A and B. Between which two terminals will the output be 120 V?	P and R
8	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 wave form of Voltage V with time t?
9	The plane face of a planoconvex lens is silvered. The refractive index of material and radius of curvature of the curved surface of the lens are n and R respectively. This lens will behave as a concave mirror of focal length.	nR
10	When the resistance measured between p and n ends of a p-n junction diode is high, it can act as a/an –	inductor
11	Atomic spectral emission lines of hydrogen atom are incident on a zinc surface. The lines which can emit photoelectrons from the surface are members of:	Neither Balmer, nor Paschen nor Lyman series

CBSE Class 12 Physics Answer Key 2025 Set 55/2/2

Check the questions and answers from CBSE 12th Physics set no. 55/2/2 below.

Question (QP Code: 55/2/2)	Answers
Two identical point charges are placed at the two vertices A and B of an equilateral triangle of side l . The magnitude of the electric field at the third vertex P is E. If a hollow conducting sphere of radius (1/4) is placed at P, the magnitude of the electric field at point P now becomes	Zero
A battery of e.m.f. 12 V and internal resistance 0.5 Ω is connected to a 9.5 Ω resistor through a key. The ratio of potential difference between the two terminals of the battery, when the key is open to that when the key is closed, is	1.05
A diamagnetic substance is brought, one by one, near the north pole and the south pole of a bar magnet. It is	repelled by north pole as well as south pole.
Two long solenoids of radii r 1 and r 2 (>r 1 ) and number of turns per unit length n 1 and n 2 respectively are co-axially wrapped one over the other. The ratio of self-inductance of inner solenoid to their mutual inductance is	n 1 /n 2
A coil of an ac generator, having 100 turns and area 0.1 m 2 each, rotates at half a rotation per second in a magnetic field of 0.02 T. The maximum emf generated in the coil is	0.63 V

CBSE Class 12 Physics Answer Key 2025: Video Solutions for All Sets

Click the link provided below to check solutions of the CBSE Class 12 Physics Paper 2025 in Live Mode.

CBSE Class 12 Physics Answer Key 2025 PDF Download SET 1 2 3 4

The Central Board of Secondary Education conducted the Class 12 Physics exam ended at 01:30. After a successful three-hour exam, they left with the hope of receiving a good result. Using the CBSE Class 12th Physics Answer Key 2025, students can assess their anticipated results and identify areas for improvement in the future. View the physics answer key for the Class 12 Board exam 2025 below.

Question Paper Set Name	Answer Key PDF Download Link
Set 1	To be added soon
Set 2	To be added soon
Set 3	To be added soon
Set 4	To be added soon

CBSE Class 12th Physics Question Paper 2025 PDF Download

We share the CBSE Class 12 Physics Question Paper 2025 For All Sets in downloadable PDF format in the below table soon. As CBSE conducts the examinations over multiple sets which results in a slight difference in difficulty level and types of questions in the papers. Future Class 12th Board Exam Aspirants students and teachers can download and cross-check the question paper pdf to understand the paper format.

Download CBSE Class 12 Question Paper 2025 PDF

CBSE Class 12 Physics Question Paper Pattern 2025

The CBSE 12th Physics Question Paper was used to assess theoretical knowledge in nine units from the CBSE Class 12 Physics Syllabus. The paper was divided into five sections, designated A through E. Each segment contains a set amount of questions and a specific type of question. The table below displays the Class 12 Physics exam question paper pattern.

Section	Number of Questions	Type of Questions	Marks
Section A	16 Questions	12 MCQs + 4 Assertion Reasoning Based	1 Mark Each
Section B	5 Questions	–	2 Mark Each
Section C	7 Questions	–	3 Mark Each
Section D	2 Questions	Case Study Based	4 Mark Each
Section E	3 Questions	Long Answer Type	5 Mark Each

CBSE Class 12 Physics Paper Analysis 2025

The CBSE Class 12 Physics paper analysis 2025 is out. Based on preliminary responses, the exam’s difficulty was deemed moderate, featuring a well-balanced combination of theoretical and numerical questions. A few students considered the numerical problems difficult but achievable with adequate preparation.

Students Reaction

Numerous students showed signs of relief after finishing the exam. Although some considered the numerical problems difficult, others noted that the MCQs and theory-related questions were simple. Effective time management was crucial, and students who worked on past years’ papers found the exam to be manageable.

Expert Faculty Review

Teachers observed that the test was evenly distributed across all parts, featuring a solid combination of theoretical and numerical inquiries. The case-based and assertion-reasoning questions demanded thorough conceptual understanding, making the exam somewhat challenging for students who relied solely on memorization. Nonetheless, all inquiries were based on the syllabus and anticipated.

Parameter	Exam Analysis 2025
Overall difficulty level of the question 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
Expected Number of Good Attempts	65+
Expected Good Score	50+
Lengthiest Question (If any)	Theoretical questions regarding EM Waves, Magnetism & Matter, Atoms, Nuclei, and Semiconductors are simple. Numerical related to electric circuits and the phenomena of refraction, interference, and diffraction. The queries in Section E are based on electrostatics, moving charges and magnetism, electromagnetic induction and alternating current, as well as optics. Graphical questions on resistivity, electromotive force, photoelectric phenomenon, and nucleon potential energy.
Time-Consuming Section (If any)	Yes, Section E

Importance of CBSE Class 12 Physics Answer Key 2025

The CBSE Class 12 answer key 2025 of Physics subject is helpful in the following ways.

Instant Feedback: Students can determine their expected grades by comparing their responses.
Finding Errors: Assists in identifying errors to enhance performance in the future.
Reducing Anxiety: Offers lucidity, assisting pupils in maintaining composure after an exam.
Competitive Exam Preparation: Assists students in identifying their areas of weakness, which is advantageous for tests such as JEE and NEET.