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A glass prism (mu = 1.5) is dipped in wa...

A glass prism `(mu = 1.5)` is dipped in water `(mu = 4//3)` as shown in figure. A light ray is incident normally on the surface AB. It reaches the surface BC after total reflection, if

A

`sin theta ge 8//9`

B

`2//3 lt sin theta lt 8//9`

C

`sin theta le 2//3`

D

It is not possible

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The correct Answer is:
A
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TARGET PUBLICATION-REFRACTION OF LIGHT -CRITICAL THINKING
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