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Light of wavelength 5000 Å incidents on ...

Light of wavelength 5000 Å incidents on reflecting surface, then for ...... value of incidence angle, reflected and incident ray will be perpendicular.

A

`0^(@)`

B

`30^(@)`

C

`90^(@)`

D

`45^(@)`

Text Solution

Verified by Experts

The correct Answer is:
D
Here `i+r=90^(@)`
but `i=r so 2i=90^(@)`
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