The manual is a systematization of data on electromagnetic oscillations and waves, optics and relativity, examples of solving problems, including the most common ones in entrance exams to higher educational institutions. To explain the individual phenomena considered in the manual, it is necessary to use the information from the previous sections of the school physics course. Such data are given in the manual. They occupy an insignificant volume, but allow the reader not to be distracted by their search in textbooks or reference books.