Dear Music Lover, you need to define in which stream you have completed your B.Sc.  Suppose you have done B.Sc. in Physics, you can go for M.Sc. in that specific subject and futher go for NET/GATE exam.  The value of Physics and Chemistry is very much required in forensic fields so you can also opt for M.Sc. (Forensic Science) or even pure sciences.  The incumbents of Physics (M.Sc.) are very less and required very much in forensic field.  Further more you can also go for M.Tech/ B.Ed. and allied fields.  You need to define your passion.