Here is a detailed analysis of CBSE Physics class 12 chapters and 9 units along with weightage. Contact 9214233303 for more information

1. All About Physics Class 12 Chapters -
CBSE 2023 Physics Syllabus
Physics forms a major part of the CBSE class 12th syllabus in science. Being the
most fundamental unit of science it helps us in understanding the world around us.
Thus to score well in the CBSE class 12th boards Physics it is important to have a
thorough knowledge of the Physics class 12 chapters. The CBSE board exams are
of prime importance in deciding your college and thus these exams cannot be taken
for granted. Therefore each subject should be given precise attention.
The Physics class 12 chapters includes nine chapters and hence it is advised that
the students should have deep knowledge of the same. So, here is a detailed
chapter-wise analysis of topics and their weightage.
CBSE Physics class 12 chapters
The central board of secondary education is the administering authority of the class
12th boards. It is this body that is responsible for forming the CBSE class 12th
boards syllabus and thus it is the same body that forms the Physics syllabus too. As
per the latest update from the board, no new chapters have been added and no
chapters have been exempted from the Physics class 12 chapters.
Getting familiar with the syllabus is important to plan your preparation. Along with
chapters, you should acquaint yourself with the marking scheme this will help you
know how much time should be allotted to each topic.

2. CBSE Physics class 12 chapters: Units along with
weightage
As mentioned the Physics class 12 chapters incorporate 9 units that have been
mentioned with topics in the table below:
Unit No. Name of Unit No. of
Periods
Mark
s
Unit–I Electrostatics 26 16
Chapter–1: Electric Charges and Fields
Chapter–2: Electrostatic Potential and
Capacitance
Unit-II Current Electricity 18
Chapter–3: Current Electricity
Unit-III Magnetic Effects of Current and Magnetism 25 17
Chapter–4: Moving Charges and Magnetism
Chapter–5: Magnetism and Matter
Unit-IV Electromagnetic Induction and Alternating
Currents
24

3. Chapter–6: Electromagnetic Induction
Chapter–7: Alternating Current
Unit–V Electromagnetic Waves 04 18
Chapter–8: Electromagnetic Waves
Unit–VI Optics 30
Chapter–9: Ray Optics and Optical Instruments
Chapter–10: Wave Optics
Unit–VII Dual Nature of Radiation and Matter 08 12
Chapter–11: Dual Nature of Radiation and Matter
Unit–VIII Atoms and Nuclei 15
Chapter–12: Atoms
Chapter–13: Nuclei
Unit–IX Electronic Devices 10 07

4. Chapter–14: Semiconductor Electronics:
Materials, Devices, and Simple Circuits
Total 160 70
Here is a detailed analysis of Physics class 12 chapters
Unit-1 Electrostatics
Chapter–1: Electric Charges and Fields
This chapter includes Electric charges, Conservation of charge, Coulomb's law-force
between two point charges, forces between multiple charges; superposition principle
and continuous charge distribution.
Electric field, electric field lines, electric dipole, electric field due to a point charge,
electric field due to a dipole, torque on a dipole in the uniform electric field.
Electric flux uniformly charged infinite plane sheet and uniformly charged thin
spherical shell, statement of Gauss's theorem and its applications to find field due to
infinitely long straight wire.
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Chapter–2: Electrostatic Potential and Capacitance
equipotential surfaces, the electrical potential energy of a system of two point
charges and of electric dipole in an electrostatic field. Electric potential, potential
difference, electric potential due to a point charge, a dipole, and a system of
charges.

5. Dielectrics and electric polarisation, capacitors, and capacitance, a combination of
capacitors in series and in parallel, the capacitance of a parallel plate capacitor with
and without dielectric medium between the plates, energy stored in a capacitor,
Conductors and insulators, free charges and bound charges inside a conductor.
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Unit-2 current electricity
Chapter–3: Current Electricity
Electric current, the flow of electric charges in a metallic conductor, drift velocity, V-I
characteristics, electrical energy and power, electrical resistivity and conductivity, the
temperature dependence of resistance, emf of a cell, combination of cells in series
and in parallel, Kirchhoff's rules, Wheatstone bridge. mobility and their relation with
electric current; Ohm's law, Internal resistance of a cell, potential difference and emf
of a cell, the combination of cells in series.
Unit-3 Magnetic Effects of Current and Magnetism
Chapter–4: Moving Charges and Magnetism
Oersted's experiment, Concept of the magnetic field.
Biot - Savart law and its application to the current carrying circular loop.
Straight solenoid, Ampere's law, and its applications to an infinitely long straight wire,
force on a moving charge in uniform magnetic and electric fields.
The forces between two parallel current-carrying conductors-definition of an ampere,
Force on a current-carrying conductor in a uniform magnetic field, torque
experienced by a current loop in a uniform magnetic field; Current loop as a
magnetic dipole and its magnetic dipole moment, conversion to ammeter and
voltmeter and moving coil galvanometers current sensitivity.
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Chapter–5: Magnetism and Matter

6. Bar magnet, bar magnet as an equivalent solenoid magnetic field intensity due to a
magnetic dipole along its axis and perpendicular to its axis, torque on a magnetic
dipole, in a uniform magnetic field, magnetic field lines.
Magnetic properties of materials- Para-, dia- and ferromagnetic substances with
examples, Magnetization of materials, the effect of temperature on magnetic
properties.
Unit-4 Electromagnetic Induction and Alternating Currents
Chapter–6: Electromagnetic Induction;
Electromagnetic induction; Faraday's laws, induced EMF and current; Lenz's Law,
Self, and mutual induction.
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Chapter–7: Alternating Current
Alternating currents, peak and RMS value of alternating current/voltage; reactance
and impedance; LCR series circuit (phasors only), resonance, power in AC circuits,
power factor, wattless current. AC generator, Transformer.
Unit -5 Electromagnetic waves;

7. Chapter;8: Electromagnetic Waves
Basic idea of displacement current, Electromagnetic waves, their characteristics, and
their transverse nature (qualitative idea only).
Electromagnetic spectrum (radio waves, microwaves, infrared, visible, ultraviolet, X-
rays, gamma rays) including elementary facts about their uses.
Unit-6 Optics
Chapter–9: Ray Optics and Optical Instruments
Ray Optics: Reflection of light, spherical mirrors, mirror formula, refraction of light,
total internal reflection and optical fibres, refraction at spherical surfaces, lenses, thin
lens formula, lens maker’s formula, magnification, power of a lens, a combination of
thin lenses in contact, refraction of light through a prism.
Optical instruments: Microscopes and astronomical telescopes (reflecting and
refracting) and their magnifying powers.
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Chapter–10: Wave Optics
Wave Optics: Wavefront and Huygens principle, reflection and refraction of plane
waves at a plane surface using wave fronts. Proof of laws of reflection and refraction
using Huygens principle. Interference, Young's double slit experiment and
expression for fringe width (No derivation final expression only), coherent sources
and sustained interference of light, diffraction due to a single slit, and width of central
maxima (qualitative treatment only).
Unit-7 Dual Nature of Radiation and Matter
Chapter–11: Dual Nature of Radiation and Matter
Dual nature of radiation, Photoelectric effect, Hertz and Lenard's observations;
Einstein's photoelectric equation-particle nature of light. Experimental study of
photoelectric effect Matter waves-wave nature of particles, de-Broglie relation.
Unit-8 Atoms and Nuclei

8. Chapter–12: Atoms
Alpha-particle scattering experiment; Rutherford's model of atom; Bohr model of the
hydrogen atom, Expression for the radius of the nth possible orbit, velocity and
energy of the electron in his orbit, of hydrogen line spectra (qualitative treatment
only).
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Chapter–13: Nuclei
Composition and size of nucleus, nuclear force Mass-energy relation, mass defect;
binding energy per nucleon and its variation with mass number; nuclear fission,
nuclear fusion.
Unit-9 Electronic Devices
Chapter–14: Semiconductor Electronics: Materials, Devices and Simple
Circuits
Energy bands in conductors, semiconductors and insulators (qualitative ideas only)
Intrinsic and extrinsic semiconductors- p and n-type, p-n junction Semiconductor
diode - I-V characteristics in forward and reverse bias, application of junction diode -
diode as a rectifier.
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