Hello aspirant,

First of all relax, do not stress yourself. It is okay to have failure sometimes. Physics is a tough subject. First try to understand which are the weaker sections for you. Try to learn the basics of those. Try to have a clearer concept. Then try to solve the questions. Go through some of the sample questions and their solution, you can then understand the solving methods. Give more time to physics. And take breaks in between your studies, or else your exhausted mind will give up.

Don't worry! All the best.