Bihar Board Inter Physics Chapter Wise Weightage 2025: Check Class 12 Blue Print

Electrostatics

Electric Charges
Conservation of Charge
Coulomb’s Force between the two-point charges
Forces between multiple charges
Electric Potential Energy of the system of two-point charges and the Electric Dipole

8

Current Electricity

Ohm’s law
Electrical Resistance & Resistivity
Conductivity
V-I Characteristics (Linear & Non-Linear)
Kirchhoff’s Law
Meter Bridge
Wheatstone bridge
Potentiometer
Electric Energy
Power

7

Magnetic Effect of Current & Magnetism

Ampere’s law: statement & applications
Moving coil galvanometer
The sensitivity of moving coil galvanometer
Torque on a bar magnet/dipole kept in a uniform magnetic field
Ammeter
Voltmeter
Cyclotron
Earth’s magnetic field & magnetic materials (elements)
Force on a charge moving in uniform electric & magnetic fields
Bar Magnet as a solenoid

8

EMI & AC

EMI: Faraday’s Law
Induced Current & EMF
Peak & RMS value of Alternating current & voltage
Lenz’s Law
Reactance & Impedance

8

EM Waves

EMW: Characteristics, Transverse Nature
EM Spectrum

3

Optics

Reflection & Refraction of light
Mirror Formula
Magnification
Total Internal Reflection: Applications
A combination of two thin (Concave/Convex) lenses in contact
Lens Maker’s Formula

4

Dual Nature of Matter

Matter waves - Wave nature of particles
Photoelectric effect
Davisson-Germer Experiment
Einstein’s Photoelectric Equation: Particle Nature of light
De Broglie Relation
Hertz & Lenard’s Observations

4

Atoms & Nuclei

Bohr model
Energy levels
Hydrogen spectrum
Alpha-particle scattering experiment
Composition & size of the nucleus
Rutherford’s model of the atom
Atomic masses
Isotopes
Radioactive decay law

6

Electronic Devices

Transistor as a switch/as an amplifier (the common emitter configuration)
I-V characteristics of the transistor
Analog and digital signals

7

Communication System

Propagation of EMW in the Atmosphere
FM
AM: Production and detection of Amplitude-Modulated Wave

7

Total

70