Hello

B.Sc. Mathematical Science or Bachelor of Science in Mathematical Science is an undergraduate Mathematics course. Mathematical science is a broad term that refers to those academic disciplines that are primarily mathematical in nature but may not be universally considered subfields of mathematics proper.

while Physics basically is a study of the natural and fundamental science called physics that involves the study of matters and its motion through space and time. Bsc (Hons.) ... Bsc (Hons) in India is generally a three-year degree program which develops advanced theoretical and research skills.

For more details do visit the link given below :-

https://www.careers360.com/courses/physics-course

I hope this information helps you.

Good Luck!!