This book is a complete aid for the Physics Orientation course of the 3rd High School.

Each chapter contains:

• Theory questions.

• Basic solved exercises with detailed solution.

• Questions to be answered, including:

exercises for practice,

critical theory questions,

closed type questions (the 1st subject of the exams),

open-ended questions (the 2nd exam topic),

exercises (the 3rd subject of the exams),

problems (the 4th exam subject).

We recommend that you particularly insist on the open-ended questions (the 2nd subject of the exams). With these questions you will understand the "fine" points of the material of each chapter and are first-class practice for the exercises and problems you will solve later.

At the end of the book there are detailed answers to all the questions to be answered.