At what angle is the beam reflected perpendicular to the mirror? And the one that fell at an angle φ = 60 ° to the surface of the mirror?

If the beam falls perpendicular to the mirror, then the angle of incidence is 0 °, which means the angle of reflection is also 0 °. Those. the beam will be reflected perpendicular to the mirror If the angle of incidence is 60 °, then the angle of reflection is also 60 °.

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