Physics

Yes, anyone studying physics, maths, and computer science can join BCA in their graduation, but at least 55% marks are needed for that.

Hello,
Instead of looking for books, I would suggest you to go for IIT JAM Study Materials. These study materials include all the preparation stuff including unit-wise notes & question papers, important topics, previous year papers and many more. Books are available separately for different topics. So, it's better to buy the study materials and start preparing for the exam.
Best of luck.

Yes, you are eligible to give the GATE exam.

Hello Sachin,
If you get your study material from NIOS, the question paper pattern is given at the end of the 2nd book of each subject in the form of a sample question paper. You can refer to them obviously. It's quite easy than CBSE but marking scheme isn't as lenient as CBSE.

For General/OBC (NCL) category, the minimum marks will be 55 percent marks or 5.5 out of 10 aggregate in languages and subsidiaries of all the years combined. Candidates belonging to the SC/ST and PwD categories must have secured 50 percent or 5.0 out of 10 aggregate.

Hello,
Can you specify, if you are willing to study in India or abroad?

Don't worry, as you can re attempt the exams, which you didn't pass. Only thing you have to do is you should apply for re-exam and study hard to pass it. Good luck.

Yes, you are eligible for the course.

Do not try to check your aptitude, if you have interest then go for it.
All the best.

It will cost you around 60K per year without accommodation.