The book presents the subject matter in fully conformity with the syllabi prescribed by C.B.S.E., New Delhi and Education Boards of other Indian States. To keep pace with changing trends in education at national level, the whole text has been arranged strictly according to N.C.E.R.T. Pattern. The main stress has been laid on SI System. The symbols and signs used for various physical quantities are also in keeping with the recommendations at national and international levels. The book provides a result-oriented training to the young students. The whole text of the book is embedded with short notes in the form of The jargon (introducing apparently a new physical term with a proper definition), Key point (highlighting an important point in the text) and Watch out (bringing out the difference between the physical and apparent meaning of a physical term). Further, the text has been studded with simple Self-Study Questions, so as to provide an insight and a proper grip over the topic, as one learns it. In each Chapter, Concepts, Tips and Tools (CT & T) have been provided so as to enable the students to answer Very Short Answer Questions, Short Answer Questions and to solve typical Numerical Problems. Higher Order Thinking Skills (HOTS) forms a new feature of the present edition of the book. It covers Conceptual Short Answer Questions, typical Numerical Problems and application based questions set in Cambridge examinations. The article work in each chapter of a unit is coupled with well graded and carefully selected Solved Numerical Problems for easy comprehension of the beginners. These Solved Numerical Problems have been categorized into two parts viz. I from Board Examinations and II From Competitive Engineering Examinations, such as I.I.T., Roorkee and I.S.M., Dhanbad. Many such problems have been provided with solutions by adopting a novel technique in the form of Thought Process. So that the students can prepare for the Annual Examinations in an independent manner, a large number of Very Short Answer Questions and Short Answer Questions have been incorporated in the book with proper Answers/Hints. Unsolved Numerical Problems for self-practice have been categorized to enable the students to choose the appropriate formula with ease. Further, detailed Hints/Solutions have been provided to Unsolved Numerical Problems. The book contains fully solved N.C.E.R.T. Textual questions and N.C.E.R.T. Exemplar Problems at the end of each unit of the book. The Competitive Examination File in each unit forms another special feature of the book and consists of two parts. Revision at a Glance of the contents of a unit is for easy and handy reference of various physical laws, principles, terms and formulae in the unit and for its quick revision. Multiple Choice Questions set in various competitive examinations, such as C.B.S.E., (Preliminary & Mains). A.I.I.M.S., A.F.M.S., M.N.R., C.P.M.T., I.I.T. etc. have been thoroughly covered in the book. Hints/Solutions have been provided to Multiple Choice Questions set in C.B.S.E. and A.I.E.E.E. Examinations. Apart from this, Assertion and Reasoning Type Questions have been incorporated in the book for the students preparing for A.I.I.M.S. With the Competitive Examination Files on different units at their disposal, the students would be able to master them steadily all through the academic year, while preparing for admission to professional courses. As per the National Curriculum Framework (NCF), Value Based Questions in tune with those set in C.B.S.E. Examinations, have also been incorporated in the present edition. Fully solved C.B.S.E. Board Examination Papers 2014 (both Delhi & All India) have been appended to make students visualize the pattern of questions to be asked in the examinations. Fully solved A.I.P.M.T., J.E.E. Mains, J.E.E. Advanced (Papers I & II) set in 2014 Examinations have been provided to give students a close feel of such Competitive Examinations.