after BSC in physics hons., am doing mba. which specialization should keep so that i can have a good scope in india & countries like US , UK. I have thought to keep HR & Marketing before joining the course.

You know yourself better than anyone else. I hope you have a valid reason, for doing your MBA abroad. Coming to HR, let me tell you, that you need to have innate skills, to become a successful HR professional. You cannot become one. As far as Marketing is concerned, you need to do an introspection,