This book is written specifically to address the course curriculum in Engineering Physics for the first-year students of all branches of engineering. Though most of the topics covered are customarily taught in several universities and institutes, the book follows the sequence of topics as prescribed in the course syllabus of engineering colleges in Tamil Nadu.The book exposes students to fundamental knowledge in: characteristics of sound and science of architectural acoustics; ultrasonics and their applications; science of crystallography for understanding the structure of solids; band theory of solids; wave nature of light such as interference, polarization, and the optical phenomenon called photoelastic effect; properties and applications of lasers; types of optical fibres, their geometries, and use in communication systems; properties of conducting, semiconducting, superconducting and dielectric materials; characteristics of black body radiation and wave nature of matter (Quantum Physics); new engineering materials such as nanomaterials, metallic glasses, shape memory alloys and biomaterials; non-destructive testing of materials; and, solved examples to stress conceptual understanding. It also exposes knowledge in: chapter-end summary for quick revision of the important results; chapter-end short and long answer questions to probe a student's grasp of the subject matter; and, chapter-end numerical problems to enhance problem-solving ability.