A ray of light passes from a medium A having refractive index 1.6. to the medium B having refractive index 1.5. The value of critical angle of medium
A is….

Options

A. `sin^(-1)((16)/(15))`
B. `sin^(-1) sqrt((16)/(15))`
C. `sin^(-1) ((1)/(2))`
D. `sin^(-1) ((15)/(16))`

Answer

D

Explanation

`sin i_(c ) = (1)/(n_(AB)) rArr i_(c ) = sin^(-1) ((1.5)/(1.6)) = sin^(-1) ((15)/(16)).`