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A ray of light of refractive index 1.4ap...

A ray of light of refractive index `1.4`approaches the boundary surface between the liquids and air at an angle of incidence whose sine is `0.8`.Which of the following statements is correct about the behaviour of the light

A

It is impossible to predict the behaviour of the light ray on the basic of the informationsupplied.

B

The sine of the angle of refraction of the emergent ray will less than`0.8`.

C

The ray will be internally reflected

D

The sinc of the angle of the refraction of the emergent ray will be greater than`0.8`.

Text Solution

Verified by Experts

The correct Answer is:
C

For`TIR rArr 1.4xxsinC=1xxsin90^(@)`
`SinC=(1)/(1.4) rArr SinC=(5)/(7)=.7`
`sini=.8 rArr igtC`so`T.I.R`will happen
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