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The refractive index of a prism is 2. Th...

The refractive index of a prism is 2. The prism can have a maximum refracting angle of

A

`90^(@)`

B

`60^(@)`

C

`45^(@)`

D

`30^(@)`

Text Solution

Verified by Experts

The correct Answer is:
b.
Critical angle `theta_(c)=sin^(-1)((1)/(mu))`
`=sin^(-1)((1)/(2))=30^(@)`
If `A gt 2theta_(c)` , the ray does not emerge from the prism. So, maximum angle can be `60^(@)` .
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