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A horizontal ray is incident on a right-...

A horizontal ray is incident on a right-angled prism with prism angle of 4o. If the refractive index of material of the prism is 1.5, angle of emergence is .......... . Use the given figure.

A

`4^@`

B

`6^@`

C

`10^@`

D

`0^@`

Text Solution

Verified by Experts

The correct Answer is:
B
`i=0,A=4^@,mu=1.5,e=?`
For small angle of prism
`delta=A(mu-1)=4(1.5-1)=2`
Now,`i+e=A+delta impliesi=A+delta+e`
`=4+2+0=6^@`
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