Hey 

yes that is very much sufficient for you to score above 95% in boards but make sure you do everything properly because physics paper is tough & tricky as compared to other subjects

good luck!

Hello,
Yes definitely you can score 95+ in physics if you practice more number of derivations and some theories.
But you also try to learn very short answers which is the only section which makes a student to fall down to below 90%
So be careful with that and read every basic concept it is good that you are practicing from ncert book and previous years question papers continue with it you will be succeeded
All best!

Hey,
Yes, you can definitely score 95+ in physics by doing above mentioned by you But you don't know the mind set of paper maker so you should be ready for any unexpected things in paper to score 95+. If you have completed all syllabus then start revising them as many times as possible. It will strengthen your concepts and solving ability and you will be prepared for any kind of difficulty level paper.
All the best