The second edition of Engineering Physics is primarily designed to serve as a textbook for undergraduate students of engineering. It will also serve as a reference book for undergraduate science (B Sc) students, scientists, technologists, and practitioners of various branches of engineering. Delving into key subjects with clarity and simplicity, the book is divided into four parts. Part I covers optics, waves, oscillations, architectural acoustics, and ultrasonics. Part II explores classical mechanics, relativistic mechanics, quantum mechanics, and statistical mechanics. Electromagnetism-related topics, including dielectric and magnetic properties, along with electromagnetic field theory, are discussed in Part III. Part IV delves into advanced topics such as X-rays, crystal physics, semiconductor physics, conducting and superconducting materials. The final section of the book touches upon nuclear physics, radioactivity, nanotechnology, latest engineering materials thermodynamics, and quantum computing.