Science

To learn Physics in easy way first build the basic concepts. Firstly remove the mindset that Physics ia a tough subject. Its infact very fascinating only if you get the concepts correctly otherwise you may seem to hate it. Physics is not about to memorize a formula. You have to understand what does this formula is saying to you and what are the conditions under which it can be applied. Once you know the rules you can play a game
Same is with Physics.

Integrated Physics needs time and patience both. Placement general depends on the type of skill set that you have earned.

IIT Bombay is best for M.Sc. Physics.

First you need to do M.Sc. Then only can go for Ph.D.

With 69 percentage it will be hard to get government colleges especially central university but you can try for state government colleges or private colleges.

Every branch has its own usefulness but it all depends on your interest. If you have not decided which field you want to pursue then you should go for plain or normal M.Sc. Programme so that you can explore various fields.

Dear Manish, The following are the best courses after 12th commerce with mathematics other than BCA:
B.Sc (IT)
B.Sc (Computer Science)

Dear Ragula, Unfortunately, M.Sc. Biochemistry is not offered by Government city college but you can choose M.Sc. Biotechnology and it is available there.

Dear Thasneem,
Please go through this link and download the pdf file with latest update notification
https://www.shiksha.com/college/jipmer-puducherry-jawaharlal-institute-of-postgraduate-medical-education-and-research-pondicherry-55637/cutoff