Bihar Board Class 12 Physics Weightage 2026 Unit and Chapter-Wise Mark Distribution
Bihar Board Class 12 Physics Weightage 2026 is helpful to prepare for the final exam, as you can easily prioritize the topics based on the marks distribution. You can check the topic-wise marks distribution for the class 12 Physics subject here.
Bihar Board Class 12 Physics Weightage 2026:Students in the science stream often find the subject more challenging than other subjects. To prepare better for the Class 12 BSEB Class 12 Physics Board Exam 2026, you should check the weightage of topics so that you can pick the important topics first. As per the Bihar Board Class 12 Physics Marking Scheme 2026, the optics chapter has the highest weightage, i.e., 14 marks, followed by chapters like Electrostatics, Magnetic Effect of Current and Magnetism, and Electromagnetic Induction and Alternating Current of 8 marks each. You can also refer to theBihar Board Class 12 Physics Previous year Question Papersto solve different types of questions asked from these topics.
Moreover, the BSEB 12th Physics Question Paper 2026 comprises a total of 96 questions, which are divided into 70 objective questions, 20 short-answer questions, and 6 long-answer questions. You have to attempt only 35 objective questions, 10 short-answer questions, and 3 long-answer questions of your choice. You can check the Bihar Board Class 12 Physics Weightage 2026 Unit and Chapter-Wise Mark Distribution below to prepare for the final exam.
Bihar Board Class 12 Physics Chapter-wise Mark Distribution 2026
The total marks allocated for the examination are 100, of which 70 marks are for the theory paper and 30 marks are for the practical assessment. The chapter-wise weightage for the BSEB Class 12 Physics paper is tabulated below. You can also go through theBihar Board Class 12 Physics Syllabus 2025-26to prepare for the final exam.Unit | Topics | Marks |
|---|---|---|
1 | Electrostatics - Electric Charges, Conservation of charge, Coulomb’s law-force between two point charges, forces between multiple charges, the electrical potential energy of a system of two point charges and of an electric dipole in an electrostatic field, etc. | 08 |
2 | Current Electricity - Ohm’s law, electrical resistance, V-I characteristics (linear and nonlinear), electrical energy and power, electrical resistivity and conductivity, Kirchhoff’s laws, and simple applications. Wheatstone bridge, metre bridge, etc. | 07 |
3 | Magnetic Effect of Current and Magnetism - Torque on a magnetic dipole (bar magnet) in a uniform magnetic field; bar magnet as an equivalent solenoid, Force on a moving charge in a uniform magnetic and electric fields, Earth’s magnetic field and magnetic elements, etc. | 08 |
| 4. | Electomagnetic Induction and Alternating Current - Eectromagnetic Induction, Faraday's law, induced emf and current, Leaz's law, Eddy currents, self and mutual induction. | 08 |
5 | Electromagnetic Waves - Electromagnetic waves, their characteristics, their transverse nature, the Electromagnetic spectrum, including elementary facts about their uses, etc. | 03 |
6 | Optics - Refraction of light, total internal reflection and its applications, lensmaker’s formula. Magnification, power of a lens, Reflection of light, spherical mirrors, mirror formula, a combination of thin lenses in contact, etc. | 14 |
7 | Dual Nature of Matter and Radiation - Matter waves-wave nature of particles, de Broglie relation, Photoelectric effect, Hertz and Lenard’s observations; Einstein’s photoelectric equation-particle nature of light, Davisson-Germer experiment, etc. | 04 |
8 | Atom and Nuclei - Bohr model, energy levels, hydrogen spectrum, Composition and size of nucleus, Alpha-particle scattering experiment; Rutherford’s model of atom; atomic masses, isotopes, radioactive decay law, etc. | 06 |
9 | Electronic Devices - Transistor as a switch, I-V characteristics of the transistor, transistor as an amplifier (common emitter configuration), the basic idea of analogue and digital signals, etc. | 01 |
| 10 | Communication System - Elements of communication system, bandwidth of signals, bandwidth of transmission medium propagation of electromagnetic waves in the atmosphere, sky and space wave propagattion etc. | 05 |
Total | 70 | |
Knowing the Bihar Board Class 12 Physics Weightage 2026 will help you strategize for the preparation and you can prepare well for the final exam.