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Class 12 CBSE Physics Answer Key 2025Class 12 CBSE Physics Answer Key 2025: Soon after Class 12 CBSE Physics 2025 (Subject Code: 042) exam has concluded on February 21, 2025 at 1:30 pm. As the exam is over, the unofficial answer keys can be accessed here. Our experts has provided the unofficial answer key solutions for CBSE Physics 2025 for Class 12 for the objective type questions, as for subjective sections, marking will depend on the writing style of students. The question paper includes various sections designed to test different skills. Section A contains sixteen questions, with twelve MCQs and four Assertion-Reasoning questions, each worth one mark. Section B has five questions at two marks each, while Section C comprises seven questions worth three marks each. Section D features two case study-based questions, each worth four marks, and Section E includes three long-answer questions, each carrying five marks.
Also Read | Class 12 CBSE Result Expected Release Date 2025
Class 12 CBSE Physics Answer Key 2025
The unofficial answer key has been made available so that students can evaluate their performance, spot errors, and be ready for future tests. The table below contains the unofficial CBSE Class 12 Physics 2025 answer key for candidates.
Section A: Multiple-Choice Questions (QP Code: 55/4/2)
| Q.No. | Question (QP Code: 55/4/2) | Answers |
|---|---|---|
| 1 |
The figure shows variation of current (I) with time (t) in four devices P, Q, R and S. The device in which an alternating current flows is:
 | S |
| 2 | The electromagnetic waves used in radar system are: | Microwaves |
| 3 | In Young's double-slit experiment, the fringe width is found to be ẞ. If the entire apparatus is immersed in a liquid of refractive index μ, the new fringe width will be: | ẞ/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: | 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. | 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: | qλ/2π E 0 r |
| 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: | Zero |
| 8 | Which one of the following has negative value of susceptibility? | Lead |
| 9 | The difference in mass of 7 X 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: | 3.5 u |
| 10 |
The threshold voltage for a p-n junction diode used in the circuit is 0·7 V. The type of biasing and current in the circuit are:
 | Reverse biasing, 2 mA |
Section A: Multiple-Choice Questions (QP Code: 55/2/3)
| 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 |
Section A: Multiple-Choice Questions (QP Code: 55/2/1)
| Q.No. | Question (QP Code: 55/2/1) | Answers |
|---|---|---|
| 1 | 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 | CA |
| 2 | A student has three resistors, each of resistance R. To obtain a resistance of 2/3*R, she should connect: | two resistors in series and then this combination in parallel with the third resistor. |
| 3 | 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 |
| 4 | 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 | μ 0 /4π * 2M/r 3 |
| 5 |
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 | Z to Y and then Y to Z |
| 6 | 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 - | 30 |
| 7 | 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 | 2.0 * 10 8 m s -1 |
| 8 | 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 | Lyman Series |
| 9 | Two horizontal plates, separated by 1 cm, are arranged one above the other. A particle of mass 5 mg and charge 2 nC is released in air between the plates. The potential difference that should be applied to the plates so that the particle remains suspended between them, is: | 250 V |
| 10 |
The effective resistance between points A and B in the given circuit is:
 | 16/3 Ω |
| 11 | An alternating current is given by I = I 0 cos (100π)t. The least time the current takes to decrease from its maximum value to zero will be: | (1/200)s |
Section A: Multiple-Choice Questions (QP Code: 55/2/2)
| Q.No. | Question (QP Code: 55/2/2) | Answers |
|---|---|---|
| 1 | 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 |
| 2 |
The alternating current I in an inductor is observed to vary with time tas 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? | B |
| 3 | 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 |
| 4 | 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. |
| 5 | 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 |
| 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 | 5.0/√2 x 10 -10 kT |
| 7 | 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 |
| 8 | 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 | Lyman series |
| 9 | The focal length of a concave mirror in air is f. When the mirror is immersed in a liquid of refractive index 5/3, its focal length will become | 3f/5 |
| 10 |
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 |
| 11 | When the resistance measured between p and n ends of a p-n junction diode is high, it can act as a/an: | capacitor |
| 12 | The energy of an electron in a hydrogen atom in 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 | 5 |
Class 12 CBSE Physics Exam Analysis 2025 Link
Students can tap on the link to access the Class 12 CBSE Physics exam analysis 2025 and review their exam performance.
Class 12 CBSE Subject-Wise Answer Key 2025 |
| Subject Name | Answer Key Links |
|---|---|
| Entrepreneurship | Class 12 CBSE Entrepreneurship Answer Key 2025 |
| Physical Education | Class 12 CBSE Physical Education Answer Key 2025 |
| Business Studies | Class 12 CBSE Business Studies Answer Key 2025 |
| Geography | Class 12 CBSE Geography Answer Key 2025 |
| Chemistry | Class 12 CBSE Chemistry Answer Key 2025 |
| Mathematics | Class 12 CBSE Mathematics Answer Key 2025 |
| English Core | Class 12 CBSE English Answer Key 2025 |
| Hindi | CBSE Class 12 Hindi Answer Key 2025 |
| Economics | Class 12 CBSE Economics Answer Key 2025 |
| Political Science | Class 12 CBSE Political Science Answer Key 2025 |
| Biology | Class 12 CBSE Biology Answer Key 2025 |
| Accountancy | Class 12 CBSE Accountancy Answer Key 2025 |
| Sociology | Class 12 CBSE Sociology Answer Key 2025 |
Class 12 CBSE Toughest and Easiest Subject 2025 |
| Parameters | Links |
|---|---|
| Toughest Subject | Toughest Subject of CBSE Class 12 Exams 2025 |
| Easiest Subject | Easiest Subject of CBSE Class 12 Exams 2025 |
Stay tuned to the LIVE blog for more updates on Class 12 CBSE Physics Answer Key 2025.
Class 12 CBSE Physics Answer Key 2025 Live Updates
11 00 PM IST - 21 Feb'25
Class 12 CBSE Physics Answer Key 2025: Questions with Solutions
Aspirants can check the questions with solutions below as per the CBSE Class 12 Physics Answer Key 2025.
Question: The threshold voltage for a p-n junction diode used in the circuit is 0·7 V. The type of biasing and current in the circuit are:
Answer: Reverse biasing, 2 mA
10 35 PM IST - 21 Feb'25
CBSE 12th Physics 2025 Answer Key: Questions with Solutions
Aspirants can check the questions with solutions below as per the CBSE Class 12 Physics Answer Key 2025.
Question: 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
Answer: Lyman Series
10 10 PM IST - 21 Feb'25
CBSE Physics 2025 Answer Key: Questions with Solutions
Aspirants can check the questions with solutions below as per the CBSE Class 12 Physics Answer Key 2025.
Question: 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.Answer: non-conservative and field lines do not form closed loops.
09 45 PM IST - 21 Feb'25
CBSE 12th Physics Answer Key 2025 Live: Questions with Solutions
Aspirants can check the questions with solutions below as per the CBSE Class 12 Physics Answer Key 2025.
Question: A diamagnetic substance is brought, one by one, near the north pole and the south pole of a bar magnet. It is
Answer: repelled by North Pole as well as South Pole.
09 25 PM IST - 21 Feb'25
Class 12 Physics 2025 Answer Key Live: Question Paper with Solutions
Aspirants can check the questions with solutions below as per the CBSE Class 12 Physics Answer Key 2025.
Question: 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
Answer: 5.0/√2 x 10-10 kT
09 00 PM IST - 21 Feb'25
CBSE 12th Physics 2025 Answer Key: Questions with Solutions
Aspirants can check the questions with solutions below as per the CBSE Class 12 Physics Answer Key 2025.
Question: 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
Answer: 2.0 * 108 m s-1
08 35 PM IST - 21 Feb'25
CBSE 12th Physics Unofficial Answer Key 2025 Live: Questions with Solutions
Aspirants can check the questions with solutions below as per the CBSE Class 12 Physics Answer Key 2025.
Question: 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
Answer: CA
08 10 PM IST - 21 Feb'25
CBSE Physics Unofficial Answer Key 2025 Live: Questions with Solutions
Aspirants can check the questions with solutions below as per the CBSE Class 12 Physics Answer Key 2025.
Question: When the resistance measured between p and n ends of a p-n junction diode is high, it can act as a/an:
Answer: inductor
07 45 PM IST - 21 Feb'25
CBSE 12th Physics Unofficial Answer Key 2025: Overall difficulty level
The CBSE Class 12 Physics 2025 exam was 'moderate to difficult'. Some students found the CBSE Class 12 Physics exam 2025 manageable, while others struggled a bit.
07 25 PM IST - 21 Feb'25
CBSE Class 12 Physics Question Paper 2025: Question Paper with Solutions
Aspirants can check the questions with solutions below as per the CBSE Class 12 Physics Answer Key 2025.
Question: In Young's double-slit experiment, the fringe width is found to be ẞ. If the entire apparatus is immersed in a liquid of refractive index μ, the new fringe width will be:
Answer: ẞ/μ
07 00 PM IST - 21 Feb'25
CBSE 12th Physics Answer Key 2025 Live: Questions with Solutions
Aspirants can check the questions with solutions below as per the CBSE Class 12 Physics Answer Key 2025.
Question: 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?Answer: P and R
06 35 PM IST - 21 Feb'25
Class 12 CBSE Physics Answer Key 2025 Live: Question Paper with Solutions
Aspirants can check the questions with solutions below as per the CBSE Class 12 Physics Answer Key 2025.
Question: 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
Answer: 1.05
06 10 PM IST - 21 Feb'25
CBSE 12th Physics Answer Key 2025: Question Paper with Solutions
Aspirants can check the questions with solutions below as per the Class 12 CBSE 2025 Physics Answer Key.
Question: Two horizontal plates, separated by 1 cm, are arranged one above the other. A particle of mass 5 mg and charge 2 nC is released in the air between the plates. The potential difference that should be applied to the plates so that the particle remains suspended between them, is:
Answer: 250 V
05 45 PM IST - 21 Feb'25
Class 12 CBSE Physics 2025 Answer Key: Questions with Solutions
Aspirants can check the questions with solutions below as per the CBSE Class 12 Physics Answer Key 2025.
Question: 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
Answer: 2.0 * 108 m s-1
05 20 PM IST - 21 Feb'25
CBSE Physics Unofficial Answer Key 2025 Live: Questions with Solutions
Aspirants can check the questions with solutions below as per the CBSE Class 12 Physics Answer Key 2025.
Question: When the resistance measured between p and n ends of a p-n junction diode is high, it can act as a/an:
Answer: inductor
05 00 PM IST - 21 Feb'25
CBSE Class 12 Physics Answer Key 2025: Question Paper with Solutions
Aspirants can check the questions with solutions below as per the CBSE Class 12 Physics Answer Key 2025.
Question: 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?Answer:
04 38 PM IST - 21 Feb'25
CBSE Class 12 Physics Answer Key 2025 LIVE: Question Paper PDF with Solutions
Aspirants can check the questions with solutions below as per the Class 12 CBSE Physics Answer Key 2025.
Question: In 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 fromAnswer: Z to Y and then Y to Z
04 35 PM IST - 21 Feb'25
CBSE Class 12 Physics 2025 Answer Key Live: Questions with Solutions
Aspirants can check the questions with solutions below as per the CBSE Class 12 Physics Answer Key 2025.
Question: 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.Answer: They have about the same magnitude for different pairs of nucleons.
04 15 PM IST - 21 Feb'25
CBSE Class 12 Physics Unofficial Answer Key 2025: Overall difficulty level
The CBSE Class 12 Physics exam 2025 was 'moderate to difficult'. Some students found the CBSE Class 12 Physics exam 2025 manageable, while others struggled a bit.
04 00 PM IST - 21 Feb'25
Class 12 CBSE Physics Answer Key 2025: Question Paper with Solutions
Aspirants can check the questions with solutions below as per the CBSE Physics Answer Key 2025.
Question: 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:Answer: Clockwise Current
03 45 PM IST - 21 Feb'25
CBSE Physics Class 12 Unofficial Answer Key 2025: Questions with Solutions
Aspirants can check the questions with solutions below as per the Class 12 Physics Answer Key 2025.
Question: 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
Answer: -1.0 * 10-9 k̂ T
03 30 PM IST - 21 Feb'25
Class 12 CBSE Physics Answer Key 2025: Questions with Solutions
Aspirants can check the questions with solutions below as per the CBSE Class 12 Physics Answer Key 2025.
Question: The threshold voltage for a p-n junction diode used in the circuit is 0·7 V. The type of biasing and current in the circuit are:
Answer: Reverse biasing, 2 mA
03 15 PM IST - 21 Feb'25
CBSE Class 12 Physics Unofficial Answer Key 2025: Question Paper with Solutions
Aspirants can check the questions with solutions below as per the Class 12 CBSE Physics Answer Key 2025.
Question: The difference in mass of 7X 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
03 00 PM IST - 21 Feb'25
CBSE Class 12 Physics Question Paper 2025: Question Paper with Solutions
Aspirants can check the questions with solutions below as per the CBSE Class 12 Physics Answer Key 2025.
Question: In Young's double-slit experiment, the fringe width is found to be ẞ. If the entire apparatus is immersed in a liquid of refractive index μ, the new fringe width will be:
Answer: ẞ/μ
02 45 PM IST - 21 Feb'25
CBSE Class 12 Physics 2025: Answer Key by Coaching Institutes
As soon as the exam concludes, the unofficial CBSE Class 12 Physics Answer Key 2025 will be provided by the different coaching institutes and the same will be provided below on this page.
02 30 PM IST - 21 Feb'25
CBSE Class 12 Physics Answer Key 2025 Live: How to Check Unofficial Answer Key?
The CollegeDekho Team will accumulate the Class 12 CBSE Physics Answer Key 2025 here from all the coaching institutes and subject experts as soon as the exam is completed.
02 15 PM IST - 21 Feb'25
Will the Class 12 CBSE Physics Unofficial Answer Key 2025 include all sets?
Yes, the unofficial answer key will provide solutions for all question paper sets.
02 00 PM IST - 21 Feb'25
Benefit of Class 12 CBSE Physics Answer Key 2025
The answer key for Class 12 CBSE Physics also helps students understand the marking scheme and the exam pattern, which can be beneficial for future reference.
01 45 PM IST - 21 Feb'25
Class 12 CBSE Physics Answer Key 2025 Anytime Soon
The Class 12 CBSE Physics Answer Key 2025 will be available here anytime soon for all the sets providing students with a comprehensive reference to evaluate their performance in the recently concluded examination. The answer key contains accurate and detailed solutions to all the questions asked in the exam, enabling students to verify their answers and calculate their scores.
01 30 PM IST - 21 Feb'25
Class 12 CBSE Physics Answer Key 2025: Exam Over, Answer Keys Soon
CBSE Class 12 Physics 2025 exam is over at 1:30 pm. Stay tuned for set-wise answer keys by our exam experts and estimate your performance.
01 10 PM IST - 21 Feb'25
Class 12 CBSE Physics Answer Key 2025: Weightage of Section E
In Class 12 CBSE Physics 2025, Section E contains three long answer questions of five marks each.
12 50 PM IST - 21 Feb'25
Class 12 CBSE Physics Answer Key 2025: Weightage of Section D
Section D contains two case study-based questions of four marks each in Class 12 CBSE Physics 2025 question paper.
12 30 PM IST - 21 Feb'25
CBSE Class 12 Physics Answer Key 2025: Weightage of Section C
Section C of CBSE Class 12 Physics 2025 exam contains seven questions of three marks each,
12 10 PM IST - 21 Feb'25
Class 12 CBSE Physics Answer Key 2025: Weightage of Section B
Section B contains five questions of two marks each in Class 12 CBSE Physics 2025 exam.
11 50 AM IST - 21 Feb'25
CBSE Class 12 Physics Answer Key 2025: Weightage of Section A
Section A of CBSE Class 12 Physics 2025 contains sixteen questions, twelve MCQs, and four Assertion Reasoning based of 1 mark each.
11 30 AM IST - 21 Feb'25
Class 12 CBSE Physics Answer Key 2025: How many total sections?
In total 5 sections are included in Class 12 CBSE Physics 2025 question paper i.e., Section A, Section B, Section C, Section D, and Section E.
11 10 AM IST - 21 Feb'25
Class 12 CBSE Physics Answer Key 2025: Is calculator allowed?
No, the use of calculators is prohibited in Class 12 CBSE Physics 2025 exam.
10 50 AM IST - 21 Feb'25
Class 12 CBSE Physics Answer Key 2025: Total Questions
The total number of questions included in Class 12 CBSE Physics 2025 question paper is 33.
10 30 AM IST - 21 Feb'25
Class 12 CBSE Physics Answer Key 2025: Exam Begun
CBSE has begun Class 12 CBSE Physics 2025 (Subject Code: 042) exam at 10:30 pm.
10 10 AM IST - 21 Feb'25
Class 12 CBSE Physics Answer Key 2025: Most Repeated Question 9
Draw equipotential surface due to an isolated point charge (-q) and depict the electric field lines.
09 50 AM IST - 21 Feb'25
CBSE 12th Physics Answer Key 2025: Most Repeated Question 8
Draw the equipotential surface due to an electric dipole.
09 30 AM IST - 21 Feb'25
Class 12 CBSE Physics Answer Key 2025: Most Repeated Question 7
Draw the equipotential surfaces corresponding to a uniform electric field in the z-direction.
09 15 AM IST - 21 Feb'25
CBSE Class 12 Physics Answer Key 2025: Most Repeated Question 6
N small conducting liquid droplets, each of radius r, are charged to a potential V each. These droplets coalesce to form a single large droplet without any charge leakage. Find the potential of the large drop.
09 00 AM IST - 21 Feb'25
Class 12 CBSE Physics Answer Key 2025: Most Repeated Question 5
A uniformly charged large plane sheet has charge density
08 45 AM IST - 21 Feb'25
CBSE Class 12 Physics Answer Key 2025: Most Repeated Question 4
Does the charge given to a metallic sphere depend on whether it is hollow or solid. Give reason for your answer.
08 30 AM IST - 21 Feb'25
Class 12 CBSE Physics Answer Key 2025: Most Repeated Question 3
A cube of side 20 cm is kept in a region as shown in the figure. An electric field E exists in the region such that the potential at a point is given by V=10x + 5, where V is in volt and x is in m. Find the electric field E and total electric flux through the cube.
08 15 AM IST - 21 Feb'25
Class 12 CBSE Physics Answer Key 2025: Most Repeated Question 2
An electric dipole of length 2 cm is placed at an angle of 30° with an electric field 2x105 N/C. If the dipole experiences a torque of 8 x 10-3 Nm, the magnitude of either charge of the dipole is
- 4µC
- 7µC
- 8mC
- 2mC
08 00 AM IST - 21 Feb'25
CBSE Class 12 Physics Answer Key 2025: Most Repeated Question 1
If the net electric flux through a closed surface is zero, then we can infer
- E/4
- 0
- 2E
- 4E
07 45 AM IST - 21 Feb'25
CBSE 12th Physics Answer Key 2025: Maximum Marks
The maximum marks for CBSE 12th Physics 2025 exam is 70.
07 30 AM IST - 21 Feb'25
Class 12 CBSE Physics Answer Key 2025: When will the exam held?
CBSE is all set to conduct CBSE Physics 2025 Class 12 exam in offline mode today, February 21, 2025.
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