maine arts side se 12th paas ki h or mujhe BCA ka course krna h to sir aap mujhe boys college btaye or ye college kaha h
Yes, you can do BCA after 12th std even if you had an arts stream. Eligibility criteria for admission vary from college to college. Some need maths as a compulsory subject in 11-12th and some don't.
There are many colleges in India offering BCA courses. It depends upon the candidate which state he/she prefers.
I'll list few colleges offering BCA courses.
1.Christ University, Bangalore
2.GLS institute of computer science, Ahmedabad
3.IBSAR, Navi Mumbai
4.Xavier Institute of Computer Application, Ahmedabad
8.ITM University, Gwalior
9.BVIMR, New Delhi