The purpose of this book is to prepare the student in the best possible way by presenting in detail all the teaching material of the solid body chapter of Physics for the 12th grade.

It contains detailed theory, closed and open type questions, solved exercises-problems, as well as exercises and problems to be solved.

• The theory is presented using the question-answer method. Where we deemed necessary, we provided some additional information to help clarify fine points of the theory. At the end of the theory of each chapter, there are questions for review.
• The questions are structured by type (closed type – topic A of National Exams and open type – topic B of National Exams). Specifically, the closed type questions are divided into group A questions (based on the theory of the school textbook) and group B questions (questions requiring deeper understanding).
• In the solved exercises-problems of each chapter, the methodology is integrated at key points, which the student often encounters during the solution of exercises and problems. Detailed guidance is also provided on what the student should not forget after studying the solved example, as well as an indication of which exercises to solve are similar for practice.
• The exercises to be solved contain basic concepts that the student must grasp before proceeding to the problems to be solved, which require more complex thinking.
• In each section (before the closed type questions), there is a detailed study proposal at two levels. The 1st level refers to basic study, while the 2nd level refers to in-depth study.

For all questions, exercises, and problems to be solved, there are detailed solutions at the end of the book.