Athira, In order for you to be eligible for M.Sc Forensic Science, you would have to satisfy the eligibility criteria for the same. Now, the eligibility criteria for M.Sc Forensic Science varies across institutions but in general, the eligibility criteria states that a candidate 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.

Now, this eligibility criteria is present in almost all the universities but some institutes may have other criteria too, so you would have to take it into consideration too.

So, if you have a Bachelor's degree in Science like B.Sc Physics as in your case, then you can surely opt for a Masters In Forensic Science from a recognized university.

Hey,
Masters of Science(M.Sc) in Forensic is a two year programme. M.Sc in Forensics is designed in a way that can help a student get the advanced  knowledge about the theoretical and practical aapects of forensic science.
The eligibility criteria to pursue this course is different for different institutions. Primarily,it includes Bachelors in Science/engineering/pharmacy/medicine obtained from a recognized University with minimum 60 percent aggregate.
Hence,you are eligible for M.Sc in Forensics with Bachelor in Physics.
Hope this helps.
Good luck.