IIT JEE Main and Advanced test the conceptual knowledge of aspirants by asking real-life application based problems on Physics, Chemistry, and Mathematics. Keeping this in mind, we have been publishing our best-selling series of books exclusively on different topics of all three subjects to enable aspirants for advanced ability to tackle any type of questions asked from them. "Understanding Physics" is one of those best-selling series written by renowned author, D.C. Pandey which carries five fully comprehensive textbooks presenting 36 essential chapters of Physics. The fifth book on Optics and Modern Physics has been revised thoroughly to reinforce the foundation of Optics and Modern Physics simply and coherently with 8 scoring chapters promoting in-depth discussions on each theory. The focused study material for concept building along with applications for solidifying the problem-solving skills given in this book are highly advantageous. It also provides the last 6 years’ questions of JEE Main and Advanced to know the trend and patterns of questions. Enclosed with well-organized and premier set of study material to develop the substantial knowledge of Physics required for acing IIT JEE Main and Advanced, this book is the absolute best in terms of both quality and quantity.