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Light is incident normally on the short ...

Light is incident normally on the short face of a `30^@-60^@-90^@` prism. A liquid is poured on the hypotenuse of the prism. If the refractive index of the prism is `sqrt(3)`, find the maximum refractive index of the liquid so that light is totally reflected.

Text Solution

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The correct Answer is:
A

`"Critical angle"=i=60^@=theta_C`
`sin theta_C=mu_R/mu_D rArr sin 60^@=mu/sqrt3`
Solving, we get, `mu=1.5`
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