I have 47% in BA ...so can i apply for MA entrance of Modern History?
Are you asking for JNU? In order to take admission for M.A History programme you should havee 10+2+3 Education pattern securing at least 50 percent marks in aggregate of the subjects. You can check the furtehr eligibility with the given below link.
https://university.careers360.com/articles/jnu-eligibility-criteria
Good Luck!