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Consider the ray diagram for the refract...

Consider the ray diagram for the refraction given Fig. The maximum value of angle `theta` for which the light suffers total internal reflection at the vertical surface, is.
.

A

`cos^(-1)((3)/(4))`

B

`sin^(-1)((3)/(4))`

C

`tan^(-1)((4)/(3))`

D

`cos^(-1)((4)/(3))`

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The correct Answer is:
B
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