Dear aspirant,

Physics is the subject which needs to be dealt with a lot of patience.

Firstly, don 't panic.

First make the theoretical aspect of the subject clear. Then go for problematic questions.

You can do the following:

-->Try to understand the question/situation.

-->Read the questions carefully.

-->Organize the information.

-->Consider your formulas and solve.

-->Verify answer.

And mainly you need a lot of practice.

To understand the concept more deeply you can practice questions from H.C. Verma . This book has covered each and every question with detail explanation.

Practice MCQ problems from standard books like MTG, Arihant, etc.

Hope it helps you..

Best of luck..