Hello,

There is no comparison possible in between nsc physics and mphysics. Bsc physics is an bachelor degree course on physics.  It is a 3 years full time course. Minimum eligibility is to have 60 to 75% on your class 12th or it's equivalent examination. Where M physics is a master degree on physics. After completing the bsc degree if you want to do further studies in education line then master's is necessary.

Hope for the best.

Thank you.

First and formost, BSc is a bachelors degree and MPhys is a masters degree. So it is obvious that MPhys will have a more tilt towards research and thesis.
B.Sc is a 3-year degree with sometimes being extended to 4 years too whereas MPhys is a 4-year degree and has a research oriented approach.