DELETED PORTIONS OF CLASS 12 CBSE PHYSICS (2020-21)
The following topics are deleted from the CBSE Physics Class 12 Syllabus for the year 2020-21 due to COVID-19 pandemic.
Chapter-1 Electric charges and fields
Electric field due to uniformly charged thin spherical shell (field inside and outside).
Chapter-3 Current Electricity
Carbon resistors, colour code for carbon resistors; series and parallel combinations of resistors
Chapter-4 Moving Charges and Magnetism
Chapter-5 Magnetism and Matter
magnetic field intensity due to a magnetic dipole (bar magnet) along its axis and perpendicular to its axis, torque on a magnetic dipole (bar magnet) in a uniform magnetic field;
Para-, dia- and ferro – magnetic substances, with examples. Electromagnets and factors affecting their strengths, permanent magnets.
Chapter-7 Alternating Current
power factor, wattless current.
Chapter 8 Electromagnetic Waves
Basic idea of displacement current,
Chapter 9 Ray Optics and Optical Instruments
Reflection of light, spherical mirrors,(recapitulation) mirror formula , Scattering of light – blue colour of sky and reddish appearance of the sun at sunrise and sunset. resolving power of microscope and astronomical telescope, polarisation, plane polarised light, Brewster’s law, uses of plane polarised light and Polaroids.
Chapter-11 Dual Nature of radiation and matter
Chapter 13 Nuclei
Radioactivity, alpha, beta and gamma particles/rays and their properties; radioactive decay law, half life and mean life binding energy per nucleon and its variation with mass number
Chapter 14 Semiconductor Electronics: Materials, Devices and Simple Circuits
Zener diode and their characteristics, Zener diode as a voltage regulator.
No investigatory project and Activity to be demonstrated
8 experiments ( clubbed based on skills ) in place of 12
Get more information and updates from CBSE
Get your doubts in Physics answered online at AskPhysics
Also read CBSE Physics 2020-21 Syllabus