hi,

see the eligibility criteria for master of science in physics is candidates must have completed bachelors degree in physics (prefered in most of the university) with atleast duration of 3 years from a recognized university. however the marks criteria of bachelors course may differ Institute wise. admission to msc course in physics is entrance basis or based on  bachelors course marks. some of the  popular entrance exams are IIT jam, bhu pet bitspilani bitsat etc.