Find the value of the limiting angle of incidence if the refractive index of the material of prism is 1.333 and angle of prism is `60^(@)` .

Explanation

Here, refractive index of the material of the prism, `mu = 1.333,` angle of prism, `A = 60^(@)`
`therefore " " i_(1) = sin^(-1) [sinAsqrt(mu^(2) - 1)-cosA]`
`= sin^(-1) [(sqrt(3))/(2)sqrt((1.333)^(2) - 1) - (1)/(2)`
`=sin^(-1) (0.2633) = 15.27^(@)`