Mechanics

You should write TOEFL and GRE to study abroad. You must go for the selection of the university/college, where it's offered well (your particular stream). Some colleges don't ask for your GRE score. So, you can only clear TOEFL with a score which university asks for.

Go for DTU.
As DTU is one of the oldest colleges in India.
Also, PCT branch is very good and an easy branch.
You will get enough time for Masters/civil services preparation.

If you are economically good then go for MS Ramaiah, Bangalore because in Bangalore you have to spend at least 3.5 LPA. It is one of the top colleges and 10 times better than KIET.

After B.Sc Hons Physics there are following career options:
(a) M.Sc-PhD to join as R&D professional
(b) B.Ed to become a teacher
(c) Lateral entry admission in B.Tech
(d) MCA
(e) M.Sc CS / IT
(f) MBA
(g) LLB
(h) Master in Social Works
(I) Master in Mass Communication
(j) Civil Services Examination conducted by UPSC
(k) SSC exam for subordinate services
(l) CDS examination conducted by UPSC
(m) Asst Commandent exam conducted by UPSC for paramilitary forces.
(n) PO and clerical services examinations of Public Sector, etc.

Hi Kalindi,
It's not possible to mention a particular university because every single University has different admission requirements. I can only suggest you check average but popular universities like Griffith, James Cook, Mudorch, La Trobe, etc.