Hi Manish,
Bachelor's in physical science mainly studies the non living systems and is a branch of natural science. It's a 3 year program where subjects like chemistry, math, earth science and Physics are of almost importance. The minimum eligibility in most college is 50% in 12th board exam and based on your marks a merit list is prepared and on that your admission is done. Speaking about the course, it's builds a best base for higher studies like mtech and msc. You can apply for jobs to become material scientist, astronaut, atmospheric science and geo scientist. All these type of jobs are highly in demand throughout the world and the pay is really good. So I would like to recommend you to consider this course. It's really good

Good luck