Hi

IIT JAM Eligibility Criteria

For Msc Physics-

Essential subjects in Bachelor's Degree along with the minimum duration- Physics for at least two years/four semesters and Mathematics for at least one year/two semesters. If you’ve studied the essential subjects for a given duration of time, then you are eligible for the exam.

https://www.google.com/amp/s/university.careers360.com/articles/jam-eligibility-criteria/amp