is robotics is tough subject to study. I have to opt for one minor and one of the option is robotics.
You can take Minor in Robotics only if your B.Tech is in either of Electronics, Electrical, Mechanical or Manufacturing Engineering to gain maximum Advantage and secondly if you have interest in Technologies like Automation, Industry 4.O, Robotics, Self Driving Cars and Circuital Technology. Otherwise, you may do a Minor in either of Artificial Intelligence, Data Science or Management Related Subjects.