Can I pursue BA in physical education after completing 12th from science stream?

Nitish, yes you can go for Bachelors in Physical Education. Its eligibility criteria is class 12. But then most of the universities offering the course conduct a Physical Eligibility test. Check with some of the universities like Lovely University, Kanpur University, Banasthali University, etc that

I think you can pursue Bachelors in physics education. Course name is B.Ped. You can try HNBGU Garhwal University for the same. After that you can pursue M.Ed as well.