Hello,

You have not specified whether you're seeking admission in any University or regarding any entrance exam for that matter.

Admission process varies among colleges, some take on merit basis while others conduct entrance test.

Eligibility is graduation in Physics with 50% aggregate for General(the aggregate may varies depending upon University)

Some of the popular entrance exam are IIT-JAM(conducted by IITs for MSc program), CUCET(conducted by Central Universities), DUET(conducted by Delhi University).NITTET(conducted by National Institute of Technology) etc.

If you want any specific information regarding admission,I request you to provide the necessary details otherwise it won't be possible to provide clarity on this matter.