Hello Ankush

Class 11 is the beginning of your science career and so it's all the base that you have to make strong. Physics is completely a conceptual and logical subject. No theory is going to help you. But only practical knowledge will do. Here are some tips that'll help you to study Physics easily and gain interest in that.. which will surely give you good result.

Firstly, you understand the subject well..
While studying you should always have a question Why and How? Then only you can understand any concept. So take a particular chapter.. go through it once and understand that what the chapter is trying to describe. Then take the topics separately. Try to get into it.. by applying logics.. that why a particular thing happens in this topic.. and how does this happen.. >> this will keep you connected with the topic and you'll gain interest. Note down the formulae.. make a separate book for it. Solve MCQs by which you'll get the idea of how and which way the questions are asked and what logic is to be applied on what type of question.

Refer book HC Verma for learning the basics of Physics.
And try to follow the above mentioned thing.

This will definitely help you a lot and you can score good. If you show your interest towards the subject.. then the subject will surely get in your mind.

Hope this helps.!
Good Luck.!!!