The book has been thorougly revised and enlarged keeping in mind the latest syllabi of UGC, New Delhi, 2001. The complete course in "Optics", as suggested in the UGC Model Curriculum for B.Sc Physics . This book has been written for the students of B.Sc., Physics of various Universities. The book covers the syllabi, prescribed by Madras, Bharathiyar, Bharathidhasan, Madurai Kamraj and Manonmaniam Sundaranar Universities.SI Systems of Units has been throughout the text. Proper care has been taken in dealing with the subject with modern outlook. A large number of questions and problems have been given at the end of each chapter.