Hello Kinjal,

In India Psychology is a relatively new field and is now a days gaining popularity in both, studies and application. Studying psychology can take you to a series of job prospects as mentioned hereafter. he completion of studying Psychology course, candidate has various career opportunities as in;

• Clinical Psychology
• Counseling Psychology
• Health Psychology
• Teaching and Research
• Industrial/Organizational Psychology
• School Counseling
• Career Counselling
• Entrepreneur

For pursuing BA in psychology following are the best college options before you:

• 
• Delhi University (New Delhi)
• Jamia Milia Islamia (New Delhi)
• Christ University (Bangalore)
• Ambedkar University (New Delhi)
• TISS (Mumbai)
• Gautam Budh University (Noida)
• Banaras Hindu university (Varanasi)
• Aligarh Muslim university
• Fergusson College (Pune)
• Christ University (Bangalore)

Earnings; talking with respect to earnings, psychology is a lucrative field especially if you have the skills needed. AtAt t entry level, the remuneration varies approximately from Rs. 15000/- to Rs.18000/-. Established consultants in any of the fields of specialization can earn at an average between Rs.20,000 to Rs.30,000 or even more. you are paid even higher if you start as a school counselor. Clinical Psychologists with Phd who get into counselling and have a lot of experience can earn much more and many will charge on an hourly basis, which turns out to be very lucrative.

And as far as being a PCM student is concerned,  keep in mind Psychology is not just a Humanities subject but also a science. We have B.Sc.degrees in science as well. And I would say that a science stream student does better than arts in this field. You can study psychology with combination of other science subjects in BSc say Maths+physics+psychology. You can study it with arts subjects in BA for example English literature+economics+psychology (that's my graduation combination actually) . I was a PCM+CS student as well and I did pretty well in Psychology in my graduation. So I think having a science background is not a hinderahi rather a blessing for studying psychology and it's scientific methods. 

I hope I was of help. Feel free to ask anything anytime. 

I wish you a bright future.