Hello Navneet..Once you are graduate plenty of options will start knocking . After your B.Sc( Physics) degree you are eligible for both government as well as private jobs. You can apply in government organizations like DRDO, ISRO,SSPL, Airport Authority etc. You can also apply for UPSC, IBPS, Railway Jobs, SSC, Defense services, Public Service Commission.

You are also eligible for jobs like Radiation Protection Practitioner, Acoustic Consultant, Nanotechnologist, Metallurgist, Laboratory jobs ( govt as well as private).You can write JAM entrance exam (minimum 55% in B.Sc is required to appear for JAM) conducted by IIT'S

You can continue your studies also. You can go for M.Sc or MBA etc.higher education  will offer you high designated jobs and good salary package .

Hope it helps.

Good Luck