Hello Ishika !

Bachelor of arts (BA) in psychology is a 3yrs undergraduate course.

BA psychology is mainly about the processing of the human mind and human behaviour.

Eligibility - qualify 12th with atleast 50%.

Some colleges even have entrance test.

You can consider these top ranked colleges :-

1. Gargi college, new delhi

2. Banasthali vidyapith, jaipur 

3. Symbiosis college of arts and commerce, pune 

4. Nizam college, hyderabad

5. Flame university, pune

6. DAV college, chandigarh 

7. Sharda university, greater noida

All the best !