Dear student,
                          After completing your 10th you should research and decide which stream you want to choose further for your studies. You should understand as though what subjects interest you. After this you must talk to people studying that stream and know more about it.
You should then come to a result that which subjects you would like to study.
You must focus and taking up subjects that interest you as well as have a scope in future.
All the best!
I hopw this answer helped you.