Hello Sirohi sahoo

Actually according to the JEE mains there are three sections  physics, Mathematics,Chemistry 

As my suggestion is considered please don't leave any section because the competition is increasing year by year so please slove all the sections 

If you follow this guidelines you will get the good marks 

First of all study the NCERT books of physics  and slove the exampler problems and later on refer the reference book H C verma and refer the previous year question papers surely you will get the good marks don't even to leave any section so prepare well and get the good marks 

Good luck