ICSE Class 9 Answered
A ray of light falls on the plane mirror and reflects perpendicular to incident ray at the point of incidence. find the angle of incidence and the angle of reflection
Asked by mohdfaizanshakilkhan07 | 26 Feb, 2022, 07:27: AM
Expert Answer
It is given that reflected ray is perpendicular to incident ray when light is incident on plane mirror.
This means that angle between the reflected ray and incident ray is 90°.
From laws of reflection, we know that angle of incidence is equal to angle of reflection.
Thus, angle of incidence (i) = 45° = angle of reflection (r)
Thus,
i = r = 45°
Answered by Shiwani Sawant | 28 Feb, 2022, 11:30: AM
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