I am student of M.Sc. Physics
I have cracked IIT JAM exam after that I got admission in NIT.
IIT JAM exam is good opportunity for the B.Sc. students to get admission in the IITs , IISc & NITs.
Due to my less marks in the IIT JAM exam I got NIT.
I was also having the same problem what is the career opportunities for the Physics M.Sc.& PhD.
students but I have read https://scoop.eduncle.com/iit-jam-career-scope-after-msc-phd
Their are many career opportunities for the MSc. & PhD. students
Best of Luck!