Abstrak
The First Edition Of This Book Was Brought Out By Wiley Eastern Ltd. In 1994. The Sixth Edition Now At Your Hand Differs From The First Edition In Many Respects. Many-Sided Changes Both Qualitatively And Quantitatively Are The Quotable Features Of This Edition.The Purpose Of This Edition Is Not Only To Initiate The Beginners Into This Fascinating Subject, But Also To Prepare Them In This Area For The Postgraduate Examinations Conducted By Universities Spread All Over The Country. Reading This Text Book In Depth Rather Than A Casual, Go-Through May Improve The Workaholic Culture Of The Students Desiring Higher Education At Iits And Highly Graded Universities Through Gate. The Same Yardstick Is Adoptable By The Postgraduate Students In Physics And Engineering Streams Aiming To Score High Grades In The Written Tests Conducted By Upsc For Class I Posts In Various Central Government Departments And Boards.