MCA

MCA is defacto the most accepted degree by Apps Development and Maintenance companies in India.

If your target educations qualification is MCA, then you are advised to take PCM at class 12th. You can do graduation in any subject of your choice but computer science or IT are preferred degrees at graduation before MCA. In MCA, you can chose any specialization if college has a provision of specialization.

Yes, you can go for robotic filed, but you can apply for that in Japan because it is a known country in this technology. So, it will be beneficial for you.

Robotics is inter disciplinary branch of engineering, which requires mechanical, electrical, electronics and computer science engineers. If you can do embedded systems specialization after MCA, you can get opportunities to work in the field development of embedded and control systems software for development of robots.

Business Studies students are eligible to do MCA provided they had Maths in 10+2 stage. Some private Universities allow non maths students also to do MCA.

Hi,
Both the courses are good. In MBA, you will have to face so much competition. While, MCA has lesser completion. MCA is more preferable in terms of salary.

Since you have completed your MCA, I would suggest you to go with a Ph.D or ME in computer science.

You can go for either AICTE or UGC affiliated universities.

If you have skills and work experience, you can get one. You can visit any job portal and see the profile and job requirements and prepare accordingly.