hey muskan

Physics is as important as math and chemistry in JEE as it carries equal number of marks. There are important topics hat carry a good weightage of marks like Electrostatics , Oscillation and Waves , Modern Physics, Optics . Do not omit these.

Magnetics, Electromagnetic Induction and AC , Current Electricity , Waves are a few topics that a lot of queestions can be expected from.

Prepare formula sheets or flash cards for formulae from each chapter seperately which will make revision easy.

If you do not have a lot of time revise and focus more on what you already know.

for moe details regarding preparation of physics for JEE go through the following link:

https://engineering.careers360.com/articles/jee-main-preparation-tips-for-physics

hope this helped

all the best.