Question

if the angle between the incident ray and a plane mirror is 30 degree then what will be the angle of reflection
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Answer 1

Answer:

Since, angle of incidence = angle of reflection = 30 degrees. The incident ray will have an angle of reflection of 30 degrees (made with a surface normal to the mirror surface). The reflected ray will make an angle of 60 degrees (90 - 30 degrees) with the mirror surface.

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Answer 2

angle of incidence is = 30°

angle of incidence = angle of reflection

:. angle of reflection = 30°