Hey,
Well,Bachelor of Science in Physics is a three-years long undergraduate programme that aims to equip you with the in depth information and knowledge of Physics. You may go for Masters of Physics once you are done with your graduation in Physics.
Here is the list of some of the colleges that offer this course in Kerala:-
1.Government Victoria College
2.Farook College
3.Mar Ivanios College
4.The Cochin College
5.Amrita School of Arts and Sciences
6.Baselius College
7.Bishop Abraham Memorial College
8.Government College
9.Calicut University
10.Maharaja's College
11.St.Joseph's College Devagiri
Hope this helps.
Good luck.