Hi i am weak in physics. My Maths is quite strong and Chemistry too is not bad. But I wanted to improve my Physics to get a better rank. I do put in a lot of time on Physics but it is not improving much. I am not getting the confidence. What should I do?

Knowing the weakness is half done. Now the rest half is to improve on it.

 In order to improve physics you should take both the volumes of book by H C Verma.

Read the theory thoroughly and then try solving the problems after going through the solved examples. This is the best book to learn physics.

 If you still find difficulty then you can think of joining a coaching for that and online coaching at askiitians is a good option. But this option is the secondary one. You can improve only when you are determined to work hard with H C Verma.