The 6th book in the new Physics “Concepts Series” by D C Gupta of books for IIT-JEE Advanced & Mains, Concepts of Optics and Modern Physics for JEE Advanced & Main 4th Edition . The series aims at helping the students with Tricks & Techniques to Master Concepts and Problem-Solving Skills in Physics for IIT-JEE. The books are empowered with Problem-Solving Videos, by the author himself, where he has tried to demonstrate the best practices while attempting IIT-JEE Physics Problems. The Most User-Friendly Series of Books: • The book comprises of Comprehensive Theory and Miscellaneous Solved Examples for a better understanding of the concepts. • The theory not only discusses the concept at length but also discusses the various permutations and combinations in which problems can be asked in JEE Advanced. • “Gyan Booster” - Concept points are given in various places in each chapter. • To make the book more pertinent and relevant, selected NCERT EXEMPLAR, Previous years JEE Advanced & Mains, KVPY and Physics Olympiad Problems are also included. • The questions in each exercise are arranged TOPIC-WISE. • Concept Boosting Questions are marked with a Star ‘CBQ’ and High Order Thinking Skills questions as ‘HOTS’. • 15-25 Problem-Solving Videos of TYPICAL PROBLEMS demonstrating the best approach to solve Problems. • A lot of unique and new Questions similar to the ones being asked in JEE Advanced have been added in the exercises. • Hints and solutions for all the problems of the exercises are provided. • The book also contains Chapter-wise all important formulae and summarised theory at the end of each chapter for last minute Revisions.