B.Sc Physics

Hey,
No, there isn't anything else, apart from the board's result that you need to get admission. But, your marks should be really high. As the cutoffs as pretty high every year.
The link below will give you the details about the eligibility criteria.
http://www.sxccal.edu/admissions/SXCAdmission2018/UG8102/EligibilityCriteria.htm
Wishing you good luck.

Dear Suraj,
LPU is a UGC approved university and its courses are valid in India and abroad both. There is nothing to worry about. For more information, visit LPU camp office in your town.
http://www.lpu.in/admission/lpu-in-your-town.php#lpu-town

It's a good choice if you have interest in management studies. This field is totally different and theoretical rather than being practical when it comes to exams.

Yes, for MBA you need to be a graduate in any field with 50% above in graduation. I recommend you Doon Business School, Dehradun for MBA in marketing.

50% above is the criteria for all good universities. You can try also for Doon Business School, a known college for management studies.

Yes, Xavier's College-Mumbai offers B.Sc in physics. Eligibility for the same, are you must have studied physics in class 11th and class 12th. Admission are based on merit list, which are almost out. Fill the application ASAP, if they are open yet.

If you're interested in some sort of career, plan it accordingly. For example, you want to be a chemist, go for a B.Sc in chemistry and similarly, to be a physicist or if some research drags your interest in physics, then, be on physics!
If you are opting to settle for better, then, B.Sc chemistry is for you. Physics degree must be accompanied by a Master's degree, but a chemistry Bachelor's degree could do it better in fetching you a job! I, personally, had my uncle go for a job in a pharmaceutical company after he completed his B.Sc PCM (physics, chemistry and maths).

Yes you can get a reputed college or maybe you will get admit in any of north campus colleges. For more information about admission process and last year cut off visit DU website.