Question

Солнечные лучи падают на землю под углом 40 градусов к её поверхности. Под каким углом кк горизонту нужно расположить плоское зеркало, чтобы направить отражённые от него лучи вертикально вверх? Надо решение с рисунком помогите пожалуйста!

Answer 1

При решении используется закон отражения : Угол падения + углу отражения

Answer 2

Finding the Angle of Reflection

To determine the angle at which a flat mirror should be positioned to reflect the incident rays vertically upward, we can use the law of reflection. According to the law of reflection, the angle of incidence is equal to the angle of reflection.

Given that the incident angle of the sunlight on the Earth's surface is 40 degrees, we can use this information to find the angle at which the mirror should be positioned.

Let's denote the incident angle as θ and the angle of reflection as θ'.

According to the law of reflection, θ = θ'.

Therefore, the angle at which the mirror should be positioned to reflect the rays vertically upward is also 40 degrees.

Here is a diagram to illustrate the situation:

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In this diagram, the incident rays are represented by the lines coming from the left side and hitting the mirror at an angle of 40 degrees. The reflected rays are represented by the lines going upward.

Please note that the diagram is for illustrative purposes only and may not be to scale.

I hope this helps! Let me know if you have any further questions.