CBSE Class 12 Exam Analysis 2023: Physics Analysis, Review & Question Paper with Answer Key

CBSE Class 12 Physics board exam 2023 was conducted on, March 6, 2023. Candidates wrote their Physics papers from 10.30 AM to 1.30 PM.

As students will get an additional 15 minutes question paper reading time, it was advised that they reach the exam hall as per the reporting time.

Our team reached one of the CBSE examination centres to collect students' response on the difficulty level of today's Physics paper. The students who appeared in the exam found the paper lengthy and of moderate difficulty level. Experts also called it a lengthy and balanced paper.

Check the detailed paper analysis below and also download the CBSE Class 12 Physics Question Papers in PDF.

CBSE Class 12th Physics Question Paper With Answer Key - Code - 55/2/2

CBSE Class 12th Physics Question Paper With Answer Key - Code - 55/3/2

CBSE Class 12th Physics Question Paper With Answer Key - Code - Set - 1 - 55/4/1

CBSE Class 12th Physics Question Paper With Answer Key - Code - Set - 1 - 55/2/1

CBSE Class 12th Physics Question Paper With Answer Key - Code -Set -3 - 55/2/3

CBSE Class 12th Physics Question Paper With Answer Key - Code - 55/5/1

CBSE Class 12th Physics Question Paper With Answer Key - Code - 55/5/3

CBSE Class 12 Physics Exam Paper Review 2023

CBSE Class 12 Physics exam was conducted today that is on March 6, 2023, at various CBSE exam centres across India. Lakhs of students appeared for the class 12 Physics exam. Now, when the exam is over, everyone is keen to know the exam review and the difficulty level of the paper. We brings here the initial reactions of students and experts on the difficulty level and pattern of the CBSE Class 12 Physics Paper 2023.

CBSE Class 12 Physics Paper Analysis 2023: Students’ Reaction

Most students, exiting the exam centres, were happy with the paper. According to them, the exam was easy and nothing in the paper was unexpected.

A general review is as follows:

Difficulty level of paper - Medium
Most difficult section in the paper - Section C with long answer questions
Easiest part of the paper - Section A composed of MCQs
Expected Marks - 75-80%

Experts Review

Questions in the CBSE Class 12 Physics Paper 2023 were direct and from NCERT. The level of questions was similar to the previous years. Only a few questions in section c were a little tricky. Map questions were quite simple. Thus, the paper was balanced and it should have been a good attempt for all students.

Class 12 Physics paper Answer Key 2023

1. Two horizontal thin long parallel wires, separated by a distance r carry current I each in the opposite directions. The net magnetic field at a point midway between them will be

(A) Zero

(B) (µ_oI/2πr) vertically down

(D) (µ_oI/πr) vertically down

Answer: (D) (µ_oI/πr) vertically down

2. An electric dipole of length 2 cm is placed at an angle of 30^owith an electric field 2 x 10⁵N/C. If the dipole experiences a torque of 8 x 10 ^-3Nm, the magnitude of either charge of the dipole is

(A) 4 µC

(B) 7 µC

(D) 2 mC

Answer: (A) 4 µC

3. Which of the following cannot modify an external magnetic field as shown in the figure?

(A) Nickel

(B) Silicon

(D) Copper

Answer: (D) Copper

4. A square shaped coil of side 10cm, having 100 turns is placed perpendicular to a magnetic field which is increasing at 1T/s. The induced emf in the coil is
(A) 0.1V
(B) 0.5V
(C) 0.75V
(D) 1.0V

Answer: To be updated
5. Which one of the following electromagnetic radiation has the least wavelength?
(A) Gamma rays
(B) Microwaves
(C) Visible Light
(D) X-rays

Answer: (A) Gamma rays
6. In Young's double-slit experiment, the screen is moved away from the plane of the slits. What will be its effect on the following?
(i) Angluar separation of the fringes.
(ii) Fringe-width
(A) Both (i) and (ii) remain constant
(B) (i) remains constant, but (ii) decreases
(C) (i) remains constant, but (ii) increases
(D) Both (i) and (ii) increase

Answer: (C) (i) remains constant, but (ii) increases

7. E, c and v represent the energy, velocity and frequency of a photon. Which of the following represents its wavelength?
(A) hv/c²
(B) hv
(C) hc/E
(D) hv/c

Answer: (c) hc/E
8. The ratio of the nuclear densities of two nuclei having mass numbers 64 and 125 is
(A) 64/125
(B) 4/5
(C) 5/4
(D) 1

Answer: To be updated
9. The energy required by an electron to jump the forbidden band in silicon at room temperature is about
(A) 0.01 eV
(B) 0.05 eV
(C) 0.7 eV
(D) 1.1 eV

Answer: (D) 1.1 eV

10. The diagram shows four energy level of an electron in Bohr model of hydrogen atom. Identify the transition in which the emitted photon will have the highest energy.

(A) I
(B) II
(C) III
(D) IV

Answer: (C) III

11. Which of the following graphs correctly represents the variation of a particle momentum with its associated de-Broglie wavelength?

Answer: (D)

12. The capacitors, each of 4µF are to be connected in such a way that the effective capacitance of the combination is 6µF. This can be achieved by connecting
(A) All three in parallel
(B) All three in series
(C) Two of them connected in series and the combination in parallel to the third.
(D) Two of them connected in parallel and the combination in series to the third.

Answer: (C) Two of them connected in series and the combination in parallel to the third
13. What is the ratio of inductive and capacitive reactance in an ac circuit?

(A) ω²LC
(B) LC2
(C) LC/ω
(D) ω²/L

Answer : (A) ω²LC

14. In an interference experiment, third bright fringe is obtained at a point on the screen with a light of 700nm. What should be the wavelength of the light source in order to obtain the fifth bright fringe at the same point?
(A) 420nm
(B) 750nm
(C) 630nm
(D) 500nm

Answer: to be updated

15. The radius of the nth orbit in Bohr model of hydrogen atom is proportional to
(A) n²
(B) 1/n²
(C) n
(D) 1/n

Answer: (A) n²

Class 12 Physics Answer Key 2023 Set 1 ( 55/4/1) -

Section A

Q1. Two charges q1 and q2 are placed at the centres of two spherical conducting shells of radius r1 and r2 respectively. The shells are arranged such that their centres are d [ >(r1 + r2)] distance apart. The force on q2 due to q1 is:

Q2. An electron enters a uniform magnetic field with speed v. It describes a semicircular path and comes out of the field. The final speed of the electron is

a) zero
b) v
c) v/2
d) 2v

Q3. The magnetic field lines near a substance are as shown in the figure. The substance is: