greetings mohit,

assuming you to be an unreserved candidate, getting admission in Bsc hons courses like physics, chemistry, mathematics, statistics will be difficult. how you may get admission in the normal Bsc programme. however if you are a reserved category student, you will get admission in good colleges.

since you have studied computer science in 12th class, Bsc physical sciences with computer science will be the most suitable course for you.

according to you marks, you may get admission in the following colleges:

1. deshbandu college

2. maharaja agrasen college

3. rajdhani college

4. shivaji college

5. shyam lal college

pls refer to the following link for last years cut-off:

http://www.du.ac.in/cut-off.html

hope this helps

good luck!