Python

Dear Ravi!
Python is not sufficient to make a career in AI and ML. It is just the beginning. You need to figure out the objective of being in this field and then start making a career path. To give you a just overview, after Python (R is also preferred), go through the core concepts of Maths. It helps a lot in AI. If you are doing engineering (CS/IT/ECE), you must be knowing about the technicalities behind this, like NLP, Deep Learning, Decision Tree, Stochastic Models, etc. You can start learning ML.
Hope this helps. Upvote the answer if you feel satisfied. Good luck.

Yes, Python is more productive language than Java. Python is an interpreted language with elegant syntax and makes it a very good option for scripting and rapid application development in many areas.
Python is a dynamically typed programming language where there is no necessity of declaring variables whereas Java is a statically typed programming language wherein variables are to be explicitly declared. Python code is much shorter, even though some Java class shell is not listed. This might be one reason why Python can be more productive.

Yes, of course Python programming language has a very good and vital role in Automotive embedded system.

Python will be best, if you just want to learn a computer programme, because it is very easy to learn and the code are very short, easy and simple.

First of all, to learn Python or Ruby, you have to learn Java right now. But, if you are just asking for future scope, then Python and Ruby will be best.

Are you searching for BCA admission in University of Pune? If yes, go and apply. Admissions are open there.

If your programming skills are good, then your communication skills, English and personality is must suitable according to their companies. And, you must have practical knowledge apart from bookish knowledge.

Yes, you can get good internships in various companies depending upon your skills and confidence to work. Many online sites like Internshala offers various internship opportunities to students to start their career.