Hey Akash! 

You have good chances to get into DU. And, you might have a good score in the top four, plus DU only consider the score of top four. So, you have a good chance of making into the top colleges of Delhi University or North Campus like Hindu, Ramjas, Hansraj. Moreover, unlike commerce, In science, the cut-off doesn't go that much like 99 percentage. So, best wishes for your DU life ahead. 

Hello Akash,

You need not to worry, You can get easily admission in University of Delhi for Your B.Sc. Hons in Physics. You can get top 10 college for your Graduation. It may be difficult to get top 3 college but you can get less rated college that top 3.

good Luck