The 3rd book in the new Physics “Concepts Series” by D C Gupta of books for IIT-JEE Advanced & Mains, Concepts of Heat, Thermodynamics and Waves for JEE Advanced & Main 7th 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.