DELETED PORTION CBSE PHYSICS – (2020-21)
Deleted portion CLASS XI Physics
Chapter–1: Physical World deleted portion
Physics-scope and excitement; nature of physical laws; Physics, technology and society (To be discussed as a part of Introduction and integrated with other topics)
Chapter-3 : Motion in a straight line
Frame of reference, Motion in a straight line: Position-time graph, speed and velocity
Chapter-5 Laws of Motion
Intuitive concept of force, Inertia, Newton’s first law of motion; momentum and Newton’s second law of motion; impulse; Newton’s third law of motion
Chapter-7 System of Particles and Rotational Motion
Statement of parallel and perpendicular axes theorems and their applications.
Kepler’s laws of planetary motion, Acceleration due to gravity
Chapter-9 Mechanical Properties of Solids
Elastic behaviour, shear modulus of rigidity, Poisson’s ratio; elastic energy.
Chapter-11 Thermal properties matter
Heat, temperature, Heat transfer-conduction, convection and radiation
Heat engine and refrigerator.
fundamental mode and harmonics, Doppler effect.
No investigatory project and Activity to be demonstrated 8 experiments ( clubbed based on skills ) in place of 12
Hope that this list will help the students to concentrate more on the portions included and avaoid the deleted portion while preparing for exams. You can get help online for your Physics doubts at AskPhysics. At Ask Physics you can post your genuine doubts and the questions will be answered in the website www.askphysics.com.
www.plustwophysics.com is also a good source to download study materials, previous question papers for free.