This book provides a clear understanding of modern physics concepts along with basic electronics for undergraduate students. It explains relativity, quantum mechanics, and the limitations of classical physics in an easy-to-understand manner. Alongside theory, it covers practical electronics topics such as transistor biasing, amplifier circuits, feedback systems, oscillators, and fiber optics, making it a valuable resource for both academic learning and exams. The book is available in e-book as well as hardbook. The book is published by Pragati Prakashan and e-book is available on ebookselibrary. READ THE BOOK NOW