The CBSE Physics coursework 2022-2023 for class 12 has been issued by the Central Board of Secondary Education (CBSE). Students studying for the CBSE board exam in science in class 12 should carefully review the curriculum. Aside from the board test, the CBSE class 12th Physics 2022 syllabus is also important for national and state-level entrance examinations such as JEE Main, NEET, and others. The CBSE syllabus outlines the units and subjects that a student should study in physics for an academic year.
CBSE Class 12 Physics New Syllabus 2022-2023
Unit I: Electrostatics 26 Periods
Chapter–1: Electric Charges and Fields
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 due to a point charge, electric field lines, electric dipole, electric field due to a dipole, torque on a dipole in a uniform electric field. Electric flux statement of Gauss’s theorem and its applications to find field due to infinitely long straight wire uniformly charged infinite plane sheet and uniformly charged thin spherical shell (field inside and outside).
Chapter–2: Electrostatic Potential and Capacitance
Electric potential, potential difference, electric potential due to a point charge, a dipole and system of charges; equipotential surfaces, electrical potential energy of a system of two–point charges and electric dipole in an electrostatic field. Conductors and insulators, free charges and bound charges inside a conductor. Dielectrics and electric polarization, capacitors and capacitance, a combination of capacitors in series and parallel, the capacitance of a parallel plate capacitor with and without dielectric medium between the plates, energy stored in a capacitor (no derivation, formulae only).
Unit II: Current Electricity 18 Periods
Chapter–3: Current Electricity
Electric current, the flow of electric charges in a metallic conductor, drift velocity, mobility and their relation with electric current; Ohm’s law, V–I characteristics (linear and non–linear), electrical energy and power, electrical resistivity and conductivity, the temperature dependence of resistance, Internal resistance of a cell, potential difference and emf of a cell, a combination of cells in series and parallel, Kirchhoff’s rules, Wheatstone bridge.
Unit III: Magnetic Effects of Current and Magnetism 25 Periods
Chapter–4: Moving Charges and Magnetism
Concept of a magnetic field, Oersted’s experiment. Biot – Savart law and its application to current carrying circular loop. Ampere’s law and its applications to an infinitely long straight wire. Straight solenoid (only qualitative treatment), force on a moving charge in uniform magnetic and electric fields. Force on a current-carrying conductor in a uniform magnetic field, the force between two parallel current-carrying conductors–definition of ampere, torque experienced by a current loop in a uniform magnetic field; Current loop as a magnetic dipole and its magnetic dipole moment, moving coil galvanometer – its current sensitivity and conversion to ammeter and voltmeter.
Chapter–5: Magnetism and Matter
Bar magnet, bar magnet as an equivalent solenoid (qualitative treatment only), magnetic field intensity due to a magnetic dipole (bar magnet) along its axis and perpendicular to its axis (qualitative treatment only), torque on a magnetic dipole (bar magnet) in a uniform magnetic field (qualitative treatment only), 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 IV: Electromagnetic Induction and Alternating Currents 24 Periods
Chapter–6: Electromagnetic Induction
Electromagnetic induction; Faraday’s laws, induced EMF and current; Lenz’s Law, Self and mutual induction.
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 V: Electromagnetic waves 04 Periods
Chapter–8: Electromagnetic Waves
The basic idea of displacement current, Electromagnetic waves, their characteristics, their transverse nature (qualitative idea only). Electromagnetic spectrum (radio waves, microwaves, infrared, visible, ultraviolet, X–rays, gamma rays) includes elementary facts about their uses.
Unit VI: Optics 30 Periods
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.
Chapter–10: Wave Optics
Wave optics: Wavefront and Huygen’s principle, reflection and refraction of plane wave at a plane surface using wavefronts. Proof of laws of reflection and refraction using Huygen’s principle. Young’s double-slit experiment and expression for fringe width (No final derivation expression only), coherent sources and sustained interference of light, diffraction due to a single slit, and width of central maxima (qualitative treatment only).
Unit VII: Dual Nature of Radiation and Matter 08 Periods
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 VIII: Atoms and Nuclei 15 Periods
Alpha–particle scattering experiment; Rutherford’s model of atom; Bohr model of the hydrogen atom, an expression for the radius of the nth possible orbit, velocity and energy of an electron in his orbit, of hydrogen line spectra (qualitative treatment only).
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 IX: Electronic Devices 10 Periods
Chapter–14: Semiconductor Electronics: Materials, Devices and Simple
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.
PRACTICALS Total Periods 60
Students must submit the following information with their annual examination record:
The students must complete at least 8 Experiments [four from each section].
At least six activities [three from each area A and B] must be completed by the pupils.
A report on the respective project prepared by the students in the academic year.
NCERT Physics, Class XI, Parts I and II.
NCERT Physics, Class XII, Parts I and II.
NCERT has published a Physics Laboratory Manual for Class XII.
A collection of other NCERT-published related books and manuals (consider multimedia also).