Hello Kuldeep, 

If you are looking to get your Admissions for Delhi University's Colleges it is a good question to start with.

If you do not have any reserved seats through SC/ST/OBC and other categories then it is best to take your admissions within the first five cut-offs that would be released, since chances are higher for you to get an admission during the first five cut-offs, than the later ones. 

However, you do not need to worry, as more than five cut-offs would be released. Chances are that even in later cut-offs like 8th or even 9th Cut-offs you may get seats even in collges of North Campus as a lot of people withdraw their applications and the seats get thrown open.

I wish you all the best and I hope this was helpful!