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If the critical angle for total internl ...

If the critical angle for total internl reflection from a medium to vacuum is `30^@`then velocity of light in the medium is:

A

`1.5 xx 10^8 m s^(-1)`

B

`0.75 xx 10^8 m s^(-1)`

C

`3 xx 10^8 m s^(-1)`

D

`2 xx 10^8 m s^(-1)`.

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Define critical angle for total internal reflection.

If the critical angle for total internal reflection from medium to vacuum is 30^@ , then what is the velocity of light in the medium ?

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A ray o light is incident on the surface of separation of a medium with the velocity of igth at an angle 45^@ and is refracted in the medium at an angle 30^@ .Velocty of light in the medium will be:(Veloctiy of light= 3xx10^8 m s^(-1) ).

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