M.Sc in India

If you will get a good rank, then you can get a seat as per your choice.
Good luck.

If you get into the likes of IIT you should do it here, similarly pursue your course abroad if it is one of the top ranked. Obviously studying your master's abroad is better but only from a reputed university as you will be exposed to many opportunities and also research activities in Physics have wider scope. The decision is yours to make. Best of luck

Hi, it is upto you. You must narrow down your choice basis the admission requirements, your own profile, budget, career prospects etc. You must also check the program structure, research opportunities etc before you decide. Hope it helps.