First slide

Plane mirror

Question

A ray of light incidents on a plane mirror at an angle of 30°. The deviation produced in the ray is

Easy

A

30°
B

60°
C

90°
D

120°

Solution

$δ = 180^{0} - 2 i = 180^{\circ} - 60^{\circ} = 120^{\circ}$

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