Part 2 of Class 11 Physics dives into thermal physics and wave phenomena. It covers mechanical properties of solids and fluids, followed by thermodynamics, kinetic theory of gases, oscillations, and waves. These chapters are where many students stumble — especially the conceptual nuances of heat transfer and the behaviour of ideal gases.

Mastering this book is crucial because JEE frequently asks application-based questions from thermodynamics and fluids that require clear first-principles understanding. Use the solved examples as templates for problem-solving, and do not skip the 'Think About These' prompts scattered throughout. A thorough read of this text makes advanced books like SS Krotov far more accessible.