Hello Shraddha,
B.sc Hons in physics is not available at Anna University, Chennai.
Some other Universities/ Colleges in Chennai offering Bsc (Hons) in Physics-
1. Loyola College - You can refer to this Link to get details about admission: http://www.loyolacollege.edu/admission/
2. Queen Mary's College, Chennai - http://www.queenmaryscollege.edu.in/
3. Pachaiyappa's College - http://pachaiyappascollege.edu.in/
4. StellaMaris College - http://stellamariscollege.edu.in/
Colleges in Delhi University also offer Bsc (hons) in Physics-Hindu college, Ramjas College etc.
Hope this helps you!!
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