Author: Dr. Rashmi Jangir

ISBN: 978-81-17787-16-8

DOI: https://doi.org/10.59646/867

Date of Publication: October 30, 2026

Preface

Engineering Physics is one of the fundamental subjects in the first year of the Bachelor of Technology (B.Tech.) programme. It provides the scientific foundation necessary for understanding the principles, concepts, and applications that underpin various branches of engineering. A sound understanding of physics enables students to develop analytical thinking, strengthen problem-solving abilities, and gain deeper insights into the physical phenomena that drive modern scientific and technological advancements. This book, Engineering Physics, has been designed primarily for first-year B.Tech. students of Bikaner Technical University (BTU), Rajasthan. Its principal objective is to present the fundamental concepts of engineering physics in a clear, systematic, and student-friendly manner. The contents have been organised in accordance with the prescribed university syllabus, ensuring comprehensive coverage of the major topics relevant to undergraduate engineering education. A key objective of this book is to bridge the gap between fundamental physical principles and their practical applications in engineering and technology. The theoretical concepts are explained in simple, accessible language and are supplemented with mathematical derivations, illustrative diagrams, solved numerical problems, and relevant examples wherever appropriate. Particular emphasis has been placed on developing a sound conceptual understanding of the subject, encouraging students to appreciate the underlying physical principles rather than merely memorising formulae and definitions. The book covers several important areas of engineering physics, including wave optics, quantum mechanics, electromagnetic theory, solid-state physics, semiconductor physics, superconductivity, and nanomaterials, as prescribed in the relevant syllabus. These topics introduce students to the fundamental scientific principles that form the basis of contemporary developments in electronics, communication systems, advanced materials, photonics, and emerging engineering technologies. By exploring these concepts, students can better understand the relationship between theoretical physics and its applications in solving real-world engineering problems. The subject matter has been presented with the learning needs of first-year engineering students in mind. Mathematical derivations are developed step by step to facilitate understanding, while carefully selected solved examples demonstrate the application of theoretical concepts to numerical problems. Practice questions and numerical exercises have been included to reinforce learning, enhance analytical and problem-solving skills, and support preparation for university examinations. Furthermore, the diagrams and illustrations are intended to provide visual clarity, simplify complex concepts, and help students develop a more intuitive understanding of important physical phenomena. Beyond its immediate academic objectives, this book seeks to cultivate scientific curiosity, logical reasoning, and an appreciation of the role of physics in engineering innovation. A strong foundation in engineering physics not only supports the study of advanced engineering subjects but also equips students to engage with emerging technologies and interdisciplinary challenges in their future academic and professional pursuits. It is sincerely hoped that Engineering Physics will serve as a valuable learning resource for first-year B.Tech. students of Bikaner Technical University and other institutions following a similar curriculum. It is also hoped that teachers and educators will find it useful in classroom instruction, explaining fundamental concepts, illustrating physical phenomena, and guiding students towards a deeper understanding of the subject. Suggestions and constructive feedback from readers, students, and fellow academicians will be sincerely appreciated and will help improve future editions of this book. It is hoped that this book inspires students to approach physics with curiosity, confidence, and a spirit of scientific inquiry, laying a strong foundation for their continued learning and success in engineering. With best wishes for a rewarding learning experience.