Mumbai

Thakur College of Engineering and Technology is approved by AICTE and has a full-time duration course.
Placements of BE in mechanical engineering from Thakur College of Engineering and Technology, Mumbai is good according to the information provided by the college.
There is a total of 120 seats in which you can apply only through JEE Mains or Maharashtra Common Entrance Test.
The total fee for BE in mechanical engineering from Thakur College of Engineering and Technology is 4.2 Lacs.
There are many companies that come for replacement of the student and they are as follows :
Accenture | Amdocs | Atos | Capgemini | Carwale | GE Capital Services | GODREJ | HEXAWAREHCLCUMMINSLtd | HP | HSBC | IBM | ICICI Securities | iGate | Infosys | L&T Infotech | Mahindra Group | Musigma | Newgen | NTT Data | Oracle | Persistent Ltd. | Quinnox | TCS | Tech Mahindra | Zycus
The average package provided by Thakur College of Engineering and Technology is about 3.2 Lacs which is more than any colleges of BE in mechanical engineering that provides the average package of 3 Lacs in Maharashtra.

That depends entirely on what you want to do. You could pursue M.Sc. in Physics from Mumbai University. Please refer to the link provided below for details on Mumbai University. You should be able to decide whether you want to take admission in Mumbai University. I have also provided you the scope for M.Sc. Physics. You should be able to decide whether you want to pursue M.Sc. Physics.
Link1: https://www.shiksha.com/university/university-of-mumbai-fort-campus-856
Scope:
There are wide opportunities available for M.Sc Physics graduates in foreign countries. They can work in several health care, manufacturing and electronics companies in foreign countries. Students having high percentage during their post graduation can apply for jobs in National Aeronautics and Space Administration (NASA), one of most famous space research organization in the world.