Question

determine the refractive index of benzene if the critical angle is 42°

Answer 1

Refractive index of benzene (n) = 1/ sinc
n=1/sin 42°
   =1/0.6691
=1.51
therefore refractive index of benzene is 1.51

Answer 2

Hi mate here is your answer

Given:-

The critical angle of benzene = 42

The refractive index of benzene (n) = 1 / sinc

n = 1 / sin 42

n = 1 / 0.6691

n = 1.51

Hope it may help you

The refractive index of benzene = 1.51