B.Tech Scope

Choosing the right career has always been a difficult task, and it is more so now because of the diverse career options we have today. If you are someone who is inclined towards technical fields of study then there are many top B.Tech courses open to you. While B Tech in Computer Science Engineering (B.Tech CSE) may seem like the most obvious choice due to the versatile nature of the degree, and B Tech Information Technology (B.Tech IT) is another fantastic degree to pursue. B.Tech CSE: This programme is best suited for students who wish to learn about computer hardware and software, basics of computer programming, computer networking, and computer applications. B.Tech IT: This programme teaches you about software development, information security, maintaining and managing networks, and software engineering. Career Opportunities:
B.Tech CSE: Professionals holding this qualification can be placed as Data Analyst, Software Developer, Networking Engineer, Game Developer, Testing Engineer, Software Engineer, and Client-System Server Manager, to name a few designations. They can gain diverse job opportunities with higher studies and after gaining a few years of work experience. Top companies in India hiring professionals holding a B.Tech CSE qualification are Wipro, TCS, HP, Dell, Apple, Samsung, Infosys, etc. B.Tech IT: Professionals holding this qualification can be placed as Software Developers, Testing Engineers, Applications Developers, and System Analysts, to name a few designations. They are hired by top public and private sector IT companies including Accenture, Wipro, IBM, BSNL, ISRO, TCS, and CDAC. These professionals can further develop their skills and knowledge by pursuing higher education in this field. This will also help them land better jobs in the future. I would advise you to choose best University on the basis of University ranking, placements, infrastructure, faculty members etc. Best Universities for B.Tech CSE/IT
Geeta University, Panipat
SRM University
VIT
Manipal University
Chitkara University
Chandigarh University

Yes in some institutes and No in some institutes, it's possible to study M.Sc. In Physics after B.Tech in Mechanical Engineering. But only few colleges are giving chance for B.Tech students like Delhi University. Do some research about colleges giving this chance and join accordingly.
You would only be accepted to a few institutions if you wanted to pursue an MSc in physics. Traditional universities will not even accept you for a master's degree in physics. Furthermore, btech mechanical engineering is solely based on basic classical mechanics or lower level classical mechanics, the majority of which is newtonian mechanics.
BSc physics is focused on quantum mechanics, and almost all areas of study in BSc physics use quantum mechanics like there isn't any newtonian mechanics in the universe, so whatever they would be thinking in India about degree equivalence, a BSc physics is way higher than a btech mechanical engineering in terms of theoretical knowledge and depth of physics and mathematics, in fact, a BSc physics is way higher than btech, So, if you get into one of those select few universities, you'll have to work extremely hard or you'll end up in hell. Also, if you want to study physics overseas, a btech is ineligible for an MSc or MS in physics. Only those with a BSc/BS in physics are eligible. As a result, you won't be able to pursue an MSc in another country because their qualifying standards only allow for BSc/BS physics.

You can do Masters in psychology being a B.Tech CSE graduate. It's quite easier to switch now to Masters psychology. Get ready to do hardwork since you are not a psychology background student. Few colleges won't allow non psychology background students, check before and join accordingly!
Without a bachelor's degree in psychology, you can pursue an MA or MSc in psychology. The eligibility requirements will differ from one university to the other. Many leading colleges provide an MA in Psychology to graduates with a 50 percent graduation rate. So, if you have a B.Tech with a grade point average of greater than 50%, you can apply.
Some colleges grant admission to courses based on their degree grades, while others grant admission based on their entrance exam rank. In addition to the written test, some universities will conduct an oral examination. Almost all major institutions offer this subject, which you may research on the university's website.