M.Sc

If you get into the likes of IIT you should do it here, similarly pursue your course abroad if it is one of the top ranked. Obviously studying your master's abroad is better but only from a reputed university as you will be exposed to many opportunities and also research activities in Physics have wider scope. The decision is yours to make. Best of luck

You should go for M.Tech instead of M.Sc.

If you have done bca then go for mca for better future in computer.

Hi
M.Sc Mathematics will always be in demand if you also have the required social and employability skills. bits has good placement records so far so you may go ahead with it.

Yes you can do MSc Forensic Science course after BSc Course
Candidates with a background in science subjects can pursue a career in forensic science. One can do graduation in forensic science (i. e B.Sc. Forensic Science) after 10+2. After graduation they can take up diploma courses in Forensic Science & Criminology which is of 1 year duration. To take up a masters course in forensic science you need to be a graduate preferably with a first division in Physics, chemistry, zoology, botany, biochemistry, microbiology, B.pharm, BDS or applied science.

U will get IPES engineering colleges Gzb