Hello Aditi,

As per Previous year cutoff you can get NIT Calicut, NIT Durgapur, NIT Agartala etc for M.Sc. in Physics.

Cutoff for NIT Calicut and NIT Durgapur in Open Category was around 27 Marks. So there are chances that you can get good NITs considering the fact that cutoff for JAM 2018 have increased this year as compared to JAM 2017.

You can find detail cutoff for various NITs by following link- 

https://images.careers360.mobi/sites/default/files/Round-1-Closung-Score-2017.pdf

Good Luck.