Dear friend,
Am suggesting you the best colleges for Pg in physics. Following are the best colleges for pg in physics:
1. Indian Institute of Technology, Delhi

2. Indian Institute of Technology, Kharagpur

3. Indian Institute of Technology, Kanpur

4. Indian Institute of Technology, Madras

5. Indian Institute of Technology, Bombay

6. Indian Institute of Technology, Roorkee

7. Birla Institute of Technology and Sciences, Pilani

8. Institute of Technology, Banaras Hindu University, Varanasi

9. Indian Institute of Technology, Guwahati

10. Vellore Institute of Technology, Vellore
You can take admission in any of the reputed colleges mentioned above.
Hope this may help you.