Hello,
Yes, you certainly can. If you want to do it in India, you'll need to pass the GATE exam with a decent mark.
You'd want to meet their requirements in other nations. However, it is usually depending on the institute and the guide. Certain calculus-based physics courses, mathematics courses, and so on would all be required. You'd also have to satisfy the required minimum grade point average (CGPA).
The requirements changes according to universitites.
Hope it helped
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