If the angle of incidence + angle of reflection = 60° then what will be the angle of incidence?

40°

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30°

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60°

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45°

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Solution

The correct option is B
30°

We know,
$A n g l e o f i n c i d e n c e i = A n g l e o f r e f l e c t i o n r$
$i + r = 60^{\circ}$
$2 i = 60^{\circ}$
$i = 30$

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If the angle of incidence + angle of reflection = 60° then what will be the angle of incidence?

The correct option is B 30° We know, Angle of incidence i = Angle of reflection r i+r = 60∘ 2i = 60∘ i = 30

The correct option is B
30°

We know,
$A n g l e o f i n c i d e n c e i = A n g l e o f r e f l e c t i o n r$
$i + r = 60^{\circ}$
$2 i = 60^{\circ}$
$i = 30$