HCVerma had done iit, and now he is on the duty of teaching physics.this book is milestone for IIT, NEET, aspirants, as in this book every concept is cleary described by theory and mathematical point of view.After theory portion their are MCQ, then other questions of more than 2 correct type question, each question from begining is based on concept and further questions have combination of concepts.each chapter started by basic of that topic.Iprefer you to buy this book, if you are NEET, IIT, aspirants.