hellp jithu,

for any msc entrances you should be thorough with physics at graduation level and also 10th and 10+2 physics.In many entrances chemistry and mathematics also has some weightage.You should be solving as many as problems possible.Start with the basic concepts.Focus more on calculus part.Refer to the sites of instututes or university you wish to apply  for the syllabus.Plan accordingly manage your time and practice previous years question papers.

Hope this helps you

all the best