# CBSE Physics quick revision series for Class 12 students

CBSE Physics quick revision series for Class 12 students with the bare essentials ensuring a 60 % score based upon the reduced syllabus for the year 2020-21.

During this COVID-19 pandemic situation, this series will help the students learn from home better and score well in Physics. Please note that this series is intended to help the students score above average score and nota 100%. In this series we are discussing the Minimum level of learning expected from a class 12 student in CBSE Physics. So, do not further filter out content from this series.

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## CBSE Physics quick revision modules

Plus Two Physics has been divided into convenient modules as below for managing the learning well.

### CBSE Physics quick revision Module 1

Electric Charges; Conservation of charge, Coulomb’s law-force between two-point charges, forces between multiple charges; superposition principle and continuous charge distribution.

#### Module 2

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 uniform electric field.

#### Module 3

Electric flux, statement of Gauss’s theorem and its applications to find field due to infinitely long straight wire, uniformly charged infinite plane sheet

### CBSE Physics quick revision Module 4

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 of electric dipole in an electrostatic field.

#### Module 5

Conductors and insulators, free charges and bound charges inside a conductor. Dielectrics and electric polarisation, capacitors and capacitance, combination of capacitors in series and in parallel, capacitance of a parallel plate capacitor with and without dielectric medium between the plates, energy stored in a capacitor.

### CBSE Physics quick revision Module 6

Electric current, flow of electric charges in a metallic conductor, drift velocity, mobility and their relation with electric current;

#### Module 7

Ohm’s law, electrical resistance, V-I characteristics (linear and non-linear), electrical energy and power, electrical resistivity and conductivity; temperature dependence of resistance.

#### Module 8

Internal resistance of a cell, potential difference and emf of a cell, combination of cells in series and in parallel,

#### Module 9

Kirchhoff’s laws and simple applications, Wheatstone bridge, metre bridge(qualitative ideas only)

#### Module 10

Potentiometer – principle and its applications to measure potential difference and for comparing EMF of two cells; measurement of internal resistance of a cell(qualitative ideas only)

### Chapter 4 Moving charges and magnetism

#### Module 11

Concept of magnetic field, Oersted’s experiment. Biot – Savart law and its application to current carrying circular loop.

#### Module 12

Ampere’s law and its applications to infinitely long straight wire. Straight and toroidal solenoids (only qualitative treatment),

#### Module 13

force on a moving charge in uniform magnetic and electric fields Force on a current-carrying conductor in a uniform magnetic field, force between two parallel current-carrying conductors-definition of ampere,

#### Module 14

torque experienced by a current loop in uniform magnetic field; moving coil galvanometer-its current sensitivity and conversion to ammeter and voltmeter.

### Chapter 5 Magnetism and Matter

#### Module 15

Current loop as a magnetic dipole and its magnetic dipole moment, magnetic dipole moment of a revolving electron, bar magnet as an equivalent solenoid, magnetic field lines

#### Module 16

earth’s magnetic field and magnetic elements.

### Chapter 6 Electromagnetic induction

#### Module 17

Electromagnetic induction; Faraday’s laws, induced EMF and current; Lenz’s Law,

#### Module 18

Eddy currents. Self and mutual induction.

### Chapter 7 Alternating Current

#### Module 19

Alternating currents, peak and RMS value of alternating current/voltage; reactance and impedance

#### Module 20

LC oscillations (qualitative treatment only), LCR series circuit, resonance;

#### Module 21

Power in AC Circuits, AC generator and transformer.

### Chapter 8 Electromagnetic Waves

#### Module 21

Electromagnetic waves, their characteristics, their Transverse nature (qualitative ideas only).

#### Module 22

Electromagnetic spectrum (radio waves, microwaves, infrared, visible, ultraviolet, X-rays, gamma rays) including elementary facts about their uses.

### Chapter 9 Ray Optics and Optical instruments

#### Module 23

Ray Optics: Refraction of light, total internal reflection and its applications, optical fibres,

#### Module 24

refraction at spherical surfaces, lenses, thin lens formula, lensmaker’s formula

#### Module 25

magnification, power of a lens, combination of thin lenses in contact, refraction of light through a prism.

#### Module 26

Optical instruments: Microscopes and astronomical telescopes (reflecting and refracting) and their magnifying powers.

### Chapter 10 Wave Optics

#### Module 27

Wave optics: Wave front and Huygen’s principle, reflection and refraction of plane wave at a plane surface using wave fronts. Proof of laws of reflection and refraction using Huygen’s principle.

#### Module 28

Interference, Young’s double slit experiment and expression for fringe width, coherent sources and sustained interference of light,

#### Module 29

diffraction due to a single slit, width of central maximum

### Chapter 11 Dual nature of radiation and matter

#### Module 30

Dual nature of radiation, Photoelectric effect, Hertz and Lenard’s observations; Einstein’s photoelectric equation-particle nature of light. Experimental study of photoelectric effect

#### Module 31

Matter waves-wave nature of particles, de-Broglie relation

### Chapter 12 Atoms

#### Module 32

Alpha-particle scattering experiment; Rutherford’s model of atom;

#### Module 33

Bohr model, energy levels, hydrogen spectrum.

### Chapter 13 Nuclei

#### Module 34

Composition and size of nucleus, Nuclear force, Mass-energy relation, mass defect

#### Module 35

nuclear fission, nuclear fusion.

### Chapter 14 Semiconductor Electronics: Materials, Devices and Simple Circuits

#### Module 36

Energy bands in conductors, semiconductors and insulators (qualitative ideas only)

#### Module 37

Semiconductor diode – I-V characteristics in forward and reverse bias, diode as a rectifier;

#### Module 38

Special purpose p-n junction diodes: LED, photodiode, solar cell.