The textbook has been written with a view to provide a comprehensive text for the engineering engineering students of Moulana Abul Kalam Azad University of Technology with relevant topics of other universities.

Since the book is a text book and not a reference book, certain topics and derivations which are not included directly in the syllabus have been included in the book for the interest of continuity and completeness.

This book has been written in a very lucid and simple style, speciaaly its mathematical approach and logical interpretation. Difficult topics are explained with the help of diagrams and examples.

The book contains basics of simple harmonic motion, optics and lasers and applications of the topics.

Each chapter coprises of theoritical description and related problems in order to understand the topic properly.