Dear Selvendran, M.Sc Medical Physics is offered in the below colleges in Tamilnadu:
Satyabhama University
Anna University
Arulmigu Kalasalingam College of Engineering
Bharatiyar University
Kalasalingam University
PSG Arts and Science College.
Bharatisadan University
Christian Medical College.

It is difficukt to know the exact count of students in each college because the seats might or might not have been filled during that academic year.