CBSE Class 10 Answered

First thing do not study any new topic or even try. Revise whatever you have already learned. It's not going to matter how much knowledge any have but how you represent  that knowledge that's matter . For physics you have two types of questions theoretical and numerical.  For theoretical point of view you should gi through these chapters - sources of energy ' flemings hand rule and working of DC motor and generator and little bit of ohms law. And for numerical ohms law is must , start with easy question then move to tough question try to clear your basic concepts,  and in the same way do this with light chapter these are easy questions you must learn how yo solve.

And at last don't worry, pick whatever topic you want to m we are here to help.