We feel privileged to bring out “The New Book of Physics” for class XI students. The book has been prepared as per The New Education Policy (NEP) and National Curriculum Framework, 2023(NCF). The book adheres to the latest curriculum and syllabus of the Central Board of Secondary Education (CBSE). The Book will help its readers in understanding the basic concepts of physics in an interactive way. The book will also help the students in inculcating deep knowledge of the subject and their confidence will rise. This will help them in solving any type of questions that come across them. The Salient features of the book are: The book is based on the new rationalized syllabus of CBSE. The book has been written in a very simple and lucid language. All concepts given in the book relate to real life situations. All the chapters have a sufficient number of diagrams, figures and tables. All the chapters contains Problem Solving Tactics, Solved examples, Very Short Answer type Questions, Short Answer type-I questions, Short Answer type-II Questions, case Based Questions, Assertion-Reason Questions, MCQs and True and False. NCERT Textual Exercises and NCERT Exemplar Questions are given at the end of each chapter with their solution. Some additional topics which are not in the syllabus of CBSE but are useful for competitive exams have been given in boxes as an additional information. A chapter on Mathematical tools has been given in beginning of the book which will help the students in solving numerical problems. To check the understanding of the chapter sufficient number of Intext Questions have been given as ‘Self Text” in each chapter.