Hello! Oinam. Delhi city has many numerous colleges and universities(Government and private both).

Here's the list of best top B.Sc Physics Honours colleges in Delhi based on ranking -

https://www.getmyuni.com/bsc-physics-hons-colleges/delhi

You can get admissions either into private colleges easily based on your marks in PCM or in these top colleges(if you have SC, ST, OBC certificate, caste certificate),you might earn a chance.

You can visit this link for all other recognized 51 colleges/universities  in Delhi for B.Sc honors in physics -

https://www.shiksha.com/science/colleges/b-sc-physics-colleges-delhi-ncr

Hope this helps!