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A plane mirror lies face up, making an a...

A plane mirror lies face up, making an angle of `15^@` with the horizontal .A ray of length shines down vertically on the mirror .What is the angle of incidence? What will be the angle between the reflection ray and the horizontal?

A

`15^@`

B

`60^@`

C

`45^@`

D

`30^@`

Text Solution

Verified by Experts

The correct Answer is:
B


where, I=incident ray
R= reflected ray
Angle of incidence `=15^@`
Angle between reflected ray and horizontal `=60^@`.
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DC PANDEY-REFLECTION OF LIGHT-Exercise Level 1 Subjective
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