Hi Deepan,
Ramaiah College Bangalore is a really good and very reputed institution. So if you are planning to pursue your bachelor's in Physics there, you need to be sharp and really good at your subject. Usually the minimum eligibility for indian students is passing in 10+2 with 50% and the final admission is done based on your marks obtained in your 12th board exams. There are 120 seats offered and the placement are also really good. As of entrance exams, currently admission are done just on marks in 12th.
Good luck