Bihar Board Class 12 Physics Important Questions 2026

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Bihar Board Class 12 Physics Important Questions 2026 is the best way to revise the syllabus. You can solve different types of questions to get an idea about the level of your preparation and the areas in which you need improvement. By referring to the important questions, you can easily learn about the exam pattern and also the types of questions that are usually asked during the board exams. The Physics paper is worth 70 marks, and the remaining marks are allocated for the practical component. A total of 10 units are included in the Bihar Board Class 12 Physics Syllabus 2025-26 . Ensure you download the latest version of the syllabus PDF, available online at biharboardonline.com, to start your early preparation. According to the Bihar Board Class 12 Physics Exam Pattern 2026 , the theory paper will consist of MCQs, short answer-type questions, and long answer-type questions. Internal choices will be included in all the sections. Check the latest Bihar Board Class 12 Physics Important Questions 2026 here.

Bihar Board Class 12 Physics Important Questions 2026 of 1 Mark

The Physics question paper will include 70 MCQs, out of which you are required to answer 35. Each MCQ will carry one mark. Refer to some of the important questions from this section given below. These questions are taken from the previous years' question papers.

Question 1: When light enters from one medium to another, the quantity that remains constant is

A. Frequency B. Velocity C. Wavelength D. Amplitude

Question 2: The focal length of a normal eye lens is about

A. 1 mm B. 2 cm C. 25 cm D. 1 m

Question 3: Which of the following is correct for ????-particle?

(A) 1 Protons and 1 neutron (B) 2 Protons and 2 neutron (C) 1 Protons and 3 neutron (D) 2 Protons and 3 neutron

Question 4: The root mean square (r.m.s) value of the alternating current equation I = 60 sin 100 πt is

(A) 60√2

(B) 30

(C) 100

(D) Zero

Question 5: The reason for the phenomenon of interference is

(A) Phase difference

(B) Change in amplitude

(C) Velocity change

(D) Intensity change

Question 6: If the distance between the two charges is increased, then the electrostatic potential energy of the charges

(A) decreases

(B) increases

(C) may increase or decrease

(D) remains the same

Question 7: Kirchhoff’s Point Rule obeys which of the following rules

(A) Principle of conservation of energy

(B) Principle of conservation of charge

(C) Principle of conservation of momentum

(D) Principle of conservation of mass.

Question 8: The Sum of binary numbers 0110 ???????????? 0101 is

(A) (1011)ଶ

(B) (1101)ଶ

(C) (1110)ଶ (D) (0111)ଶ

Bihar Board Class 12 Physics Important Questions 2026 of 2 Marks

In the next section of the theory paper, there will be short-answer type questions for 2 marks each. The question paper will consist of 20 short-answer type questions, out of which, you are required to answer only 10 questions. You can refer to some of the most important questions that can be asked during the board exams, according to the model test papers released by the Bihar School Examination Board:

Question 1: Write down Ampere’s circuital law.

Question 2: In a vertically upward magnetic field B, a positively charged particle is projected horizontally eastwards. What will be the direction of the force on the particle?

Question 3: What do you mean by the colour code of carbon resistance?

Question 4: Write two shortcomings of the Bohr principle.

Question 5: Write down two differences between diamagnetic and paramagnetic materials.

Also Read: Bihar Board 12th Physics Previous Year Question Paper

Bihar Board Class 12 Physics Important Questions 2026 of 5 Marks

The last section of the Physics paper will consist of long-answer type questions for 5 marks each. You are required to answer three questions. There are a total of 6 questions included in this section. Refer to some important long-answer-type questions below:

Question 1: State and prove Gauss' theorem. Obtain the expression for electric intensity at a point outside a charged sphere with its help.

Question 2: State and explain Kirchhoff’s laws. Applying this law, obtain a balanced condition of Wheatstone’s bridge.

Question 3: Find out the expression for the capacitance of a parallel plate capacitor.

Question 4: The height of a TV tower is 235m. If the average population density around the TV tower is 1000 (KM)-2, then up to how many people can the transmission reach? (Radius of the earth = 6.37 x 106m)

Question 5: Explain the working of a P-N junction diode. Draw the circuit of a full-wave rectifier and explain its working.

Which chapters have more weightage in the Bihar Board Class 12 Physics Syllabus 2026?

The Bihar School Examination Board has released the latest Physics syllabus on the official website. There are a total of 10 units included in the curriculum with different weightage. You can refer to the latest exam pattern from the table given below to understand the most important chapters:

Also Check Bihar Board Class 12 Physics Model Paper 2025-26

Make sure to actively solve the model test papers and previous years' question papers to gain the much-needed knowledge about the exam pattern and the curriculum for physics. You will be able to understand the types of questions that can be asked during the main exam by referring to the Bihar Board Class 12 Physics Important Questions 2026 above.

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