Hello aiman,

There are important chapters in physics for neet 2020:-

•Electrodynamics.

•Mechanics.

•Modern Physics.

•Heat & Thermodynamics.

•SHM & Waves.

•Physical World and Measurement.

•Kinematics.

•Laws of Motion.

•Work, Energy and Power.

•Motion of System of Particles and Rigid Body.

•Gravitation.

I hope this helpful for you

Best wishes!!