Physics Spl

Firstly, you can solve NCERT (physics) then you can solve HC Verma and you are fully prepared for boards and for IIT, you can solve the objective questions of physics.

There's either theory or questions. I'll suggest you to go for S. L. Aurora for theory and there are many more in the list.

The colleges include: https://goo.gl/nP1nml

You can work as either of the following after doing B.Sc in physics:
Lab Supervisor
Researcher
Technician
Teacher
Manager
Scientist
Consulting Physicist
Research Associate
Senior Physicist
Assistant Scientist
Radiation Oncologist
Radiologist
Professor

All together as multidisciplinary involvement has great variation of placements & job opportunities. Its better to test yourself where you are best at. one particular sub - field. Get inspired by it and work on it. If you can include chemistry, you can go for Biotechnology, Biomedical, Genetic based taxonomy or a lot of other opportunities in bioelectronics.

Yeah, surely. You can do M.Sc after B.Sc because there will be lot of opportunities that you can get after doing M.Sc, you can get a professor position is in a good reputed Government College. So, you can do M.Sc. It's better to see in interest rather than scope because scope develops from interest.