It is a series of five best selling books in Physics for IIT JEE and other engineering entrance exams by the well known author DC Pandey. Without deviating to superficialities, the book focuses on the concept building and the application of the concepts in solving the varied physical problems. The exposition of the subject matter is simple and leads compltely to the direct means of solving problems in Physics requiring an understanding of the phenomena of the chaptres. A must have book indeed for anyone desiring to be firm-footed in the concepts of physics as well as their aplications in problem-solving !