Delve into the fascinating world of Applied Physics with this comprehensive textbook from the University of Mumbai. Designed for first-year engineering students across all branches, this book covers a diverse range of topics, including Lasers, Fibre Optics, Interference in Thin Films, Electrodynamics, Quantum Physics, and the Basics of Semiconductor Physics. With a conceptual approach and step-by-step solutions to numerical problems, this book aims to simplify complex concepts through easy language. It also provides solutions to the latest previous university question papers, making it an invaluable resource for exam preparation. Authored by esteemed professors, this textbook promises to be a reliable companion in your journey through the fundamentals of Applied Physics.