I have interest in Photonics, should I do M.sc Physics or M.sc Photonics? Also, is Manipal Academy for Higher Education good PG in Physics?

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Hello,
Yes you are eligible to take admission in USA to do masters.
Best universities are
1)UC San franisco
For university admissions  you need to have one of the following :
Tofel : paper based-550
Online:80
ILETS :7.0
GRE : 4.0 is required only for engineering students.
2) Northwestern University :
The average GRE score required for it is 166(Q) and 162(V).
3)University of Southern California
There no minimum score but the only requirement there is to score good in qunatitaive and a GPA >3.5/4.0
4)NewYork University
GRE score required is 4.0

Hi Swamesh,

Are you interested in topics like optical science, lasers, optical communications and so? If yes, you can safely venture to pursue photonics.
Having said that, you won't be getting to study the core and major topics of physics apart from properties of light and its interaction with materials.
Say, if you are interested in nuclear physics, you might consider taking up msc in physics rather than going for a specific course like photonics.
So you need to ponder upon your area of interest.
Your future career areas are equally bright in both. You can go for research and development in both these fields and you can get placed in top companies as well.
Manipal university is considered as a reputed university for their acads as well as placements. Infact it also offers msc in photonics. You can opt for photonics or physics in this university without any hesitation.

Let me know if you need further clarifications.