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

Options

A. It is impossible to predict the behaviour of the light ray on the basis of the information supplied.
B. The sine of the angle of refraction of the emergent ray will be less than 0.8
C. The ray will be internally reflected
D. The sine of the angle of refraction of the emergent ray will be greater than 0.8

Answer

C

Explanation

From Snell's law `1.4 xx "sin"x = 1 "sin"r`

`1.4 xx 0.8 = "sin"r gt 1` (which is not possible)
`implies` Ray will not refrect but it has total internal reflection . Hence(C).