Question

The absolute refractive index of benzene is 1.5 what is its critical angle

Answer 1

A>2(critical angle)
A/2>(critical angle)
sinA/2>sin(crictical angle)

hence,
1/u=sin(critical angle )
2/3=sin(critical angle)

critical angle=sin^-1(2/3)

Answer 2

Explanation:

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