If you are interested for IISC then it is the best college for B.Sc Physics. It takes the admission through KVPY, JEE Main, JEE Advance, NEET UG for undergraduate programmes.

The Eligibility

• Candidates have to pass 10+2 or PUC examination with Physics, Chemistry & Mathematics as a main subject from a recognized board.
• Candidates who have studied Biology, Electronics, Computer Science, Statistics, etc., in addition to PCM are also eligible to apply.
• Candidates have to secure a first class or 60% or equivalent grade in a qualifying examination.

For further you can go through with given below link.

IISC BS admission

Other colleges you can prefer:

Government Science College, Bangalore

Christ University, Bangalore

Mount Carmel College - [MCC], Bangalore

Good Luck!