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A right-angled prism is made up of a mat...

A right-angled prism is made up of a material of refractive index `mu`. It is desired that a light ray incident normally on PQ emerges parallel to the incident direction after suffering two total internal reflections . In which of the following conditions is this possible ?

A

`mu =sqrt2`

B

`mu ge sqrt3`

C

`mu =1.3`

D

Never possible

Text Solution

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The correct Answer is:
A, B
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