Hello saurabh,

Congratulation because, Yes, You can continue your MSc in physics or Math from CUCET (Common  University Entrance Test) just after your B-tech

CUCET not runs any course. It is the entrance test for the universities.

So, It will depend on Universities that they are conducting there course Regular or Distance Learning mode.

But if we talking about MSc physics. Distance Learning course is not allowed because physics is practical subject it contains proper Lab work which is not possible in Distance learning. whether their is some chances that university will allow MSc Math in a Distance Learning mode.

Good Luck!!