Hi Abanindra,
The best private colleges offering BSc Physics Hons. course in Kolkata are as follows:-
Refer here for more info - https://university.careers360.com/colleges/list-of-physics-degree-colleges-in-kolkata?degree=B.Sc.(Hons)&ownership=Private
Feel free to ask doubts in the Comment Section.
I hope this information helps you.
Good Luck!
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