There is an important element being neglected here, and it has not be adequately clarified.
Where do you think you want to pursue your career? Are you planning on staying in India?
Where you end up will dictate very strongly on the kind of career you will have the opportunity to pursue. Even a physics Nobel Laureate will have a limited employment availability in, say, Somalia, when compared to the UK! You can study as hard as you can, and achieve the best results that you can. But if there are simply no available jobs in your area of expertise at your location, you won't be able to pursue the career that you envisioned.
So if you are planning on staying in India, ask around on the kind of jobs that physics graduates in general will tend to get. I hate to give you a rose picture of jobs in experimental physics, etc. when such a scenario only applies to where I live and is completely useless to you.
Zz.