Can I get placed in a good firm after completing PGDM as I have scored 48% in class 10th, 60% in class 12th and 61% in graduation?

Hello Rohit! Generally in any B-school, the companies check your performance(both academic and extra-curricular) during your two year MBA program and give more importance to them. Some companies might consider your past academic scores, while some may not. So it depends from company to company.