Hey Aspirant

Although it is not advisable to leave any chapter as Joint Entrance Exam is a very important exam of your life, instead of completely leaving the chapter you can go through the important parts so that you dont have to skip any questions in your exam. Here are common points of the chapter

Physics, technology and society,

SI units, Fundamental and derived units.

Least count, accuracy and precision of measuring instruments,

Errors in measurement,

Dimensions of Physical quantities,

dimensional analysis and its applications,

Good luck !!!!