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A glass prism of refractive index 1.5 is...

A glass prism of refractive index 1.5 is immersed in water (refractive index 4/3). A light beam incident normally on the face AB is totally reflected to reach on the face BC if.

A

`sinthetagt8//9`

B

`sinthetalt2//3`

C

`sintheta=sqrt3//2`

D

`2//3ltsinthetale8//9`

Text Solution

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The correct Answer is:
A
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