Dear Raj,

If you have interest in Robotics then it is recommended that you should choose robotics branch in your B.tech/B.E programme.

You can check below top colleges which offer this branch

SRM University, Chennai

Manipal Institute of Technology, Manipal

Lovely Professional University, Phagwara

Graphic Era University, Dehradun

MS Ramaiah University of Applied Sciences, Bangalore

The National Institute of Engineering, Mysore

To check the complete list you can refer below link

https://engineering.careers360.com/colleges/list-of-be-btech-in-automation-and-robotics-colleges-in-india

You can also choose mechanical or mechatronics branch as it deals with robotics. 

If you want to compare the branches then mechanical is a evergreen branch which provides good scope in the future in terms of jobs and placements on the other hand Mechatronics is a close to robotics. It is all dedicated to robotics.

Good Luck!!