Hi Ajay,

To solve the Physics problems (numericals), derivations and its applications one needs to understand the concepts related to it first.

Every numerical, applications are revolving around a few key concepts and solving them means to use them step-by-step in your solution and to reach a conclusion.

You can take up a Standard book of your course and study one part of a chapter mentioned in it, then see how the numericals related to those concepts are solved. Try solving it yourself.

Attempt a few on your own. Now, you know how to solve numericals. Similarly for applications and derivatives, see what is it that you know in advance; it can be the problem statement or the question itself. Try to attempt it on your own by applying what you know about the concept highlighted in the questions. If you get stuck you can go back to your books and refer them and again get back to solving. Through this practise you will have a command on your derivatives. Also, remember the different notations used in a derivative and its meaning.

Hope this helps.

Thankyou.