Question

Солнечные лучи падают на землю под углом ф=28° к ее поверхности. Под каким углом B к горизонту нужно расположить плоское зеркало,чтобы направить отраженные от него лучи вертикально вниз??

Answer 1

A=(28+90)/2=118/2=59 градусов.

Answer 2

Calculation of the Angle of Reflection

To determine the angle at which a flat mirror should be positioned in order to reflect the rays vertically downward, we can use the law of reflection. According to this law, the angle of incidence (the angle at which the rays strike the mirror) is equal to the angle of reflection (the angle at which the rays are reflected from the mirror).

Given that the angle of incidence (f) is 28°, we need to find the angle of reflection (B) that will direct the reflected rays vertically downward.

Using the law of reflection, we can set up the equation:

f = B

Therefore, the angle at which the flat mirror should be positioned is 28° with respect to the horizon.

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