Hey Rohini, 

Physics is actually quite interesting. It is one of those conceptual subjects which need to be practiced so as to be able to be applied.

Learn the formulae and read through the theory, after that it is all practice. Attempt as many exercises, numericals and problems as possible. The more questions you solve the more doubts you'll get which when resolved your concepts will be clearer and stronger.

Solve questions from HC Verma, your coaching materials, Halliday Resnick Walker, Arihant etc.Keep solving MCQs and you'll get a grip of the subject

Make formulae chart and a handbook consisting of all important points for last minute revision before the big day. It really comes in handy.

All the best!