Hello Aspirant,

Concepts of Physics Volume 1 and Volume 2 - H.C. Verma is a good book & very helpful for exam preparation but you can not depend on single book to score good marks in exam.

You can also go for Careers360 JEE Main Knock out 2020 Preparation package.

JEE Main Knock out is completely online package based on Artificial intelligence which can be accessed by any device like Mobile, Laptop/Computer,tablet etc.

The product is divided into seven parts, customized time table, 250+ Hours Video Lectures by top faculties with Smart study material, Advanced Unlimited Full, Chapter Wise and Subject Wise Test Series, Competitive Analysis, Performance Analysis, 24*7 Doubt Resolution facility provided through Chat.

To check the further detail about it, You can go through with the given below link.

https://learn.careers360.com/knockout-jee-main-april/

Good Luck!