Hello Arun Nivas 

Don't panic because physics is not a rocket so keep calm and start studying from now. The first thing that you have to do is get notes of your professor and learn all the basic concept. And don't forget to do your assignment questions. And mug up all the formulae for numericals .And for help you can prefer YouTube to clear your concepts

And also solve previous years question papers as many as you can at least last 5-6 yeas.. If you do all these things you will definitely pass your physics paper

Hope this helps and if you need any help please ask me in comment section .

All the best !!