Hey,
Here is the list of some of the colleges of the University of Delhi that offer graduation in Psychology in South Campus:
1.Lady Shri ram College(LSR)
2.Jesus and Marry College
3.Zakir Hussain College
4.Kamla Nehru College
5. Gargi College
6. Sri Aurobindo College
Hope this helps.
Good luck.

Hello Varun, 

Here are a list of colleges in Delhi (under DU) that have a South campus and offer courses in psychology

1. Lady Sri Ram College 

2. Gargi College

3. Sri Aurobindo college

I am afraid not a lot of colleges match both your criterias. I mentioned all the colleges I knew that fit your criteria just in case you were not strictly looking for a college for yourself. But if you are,  then I'm afraid Sri Aurobindo College ( applied psychology )  is the only choice for you as the first 2 colleges ( Lady Sri Ram and Gargi )  are for girls only. 

Hope this helps  :)