Hey antonitte,
Yes U can study or apply for M.Sc Forensic Science.
In order for you to be eligible for M.Sc Forensic Science, the eligibility criteria for M.Sc Forensic Sciences One should have a Bachelor's degree in Science/pharmacy/medicine etc. or an equivalent degree from a recognized university. Also, the candidate should have secured 55-60 % in the Bachelor's degree.

So, if you have a Bachelor's degree in Science like B.Sc Physics as in your case, then you would admission in to Masters In Forensic Science from a recognized university.
Hope it helps...