Question

Calculate the ratio of the critical angle of diamond to the critical angle of crown glass if both are surrounded by a vacuum.

Answer 1

$\theta_d=\sin^{-1}(1/n_d)=\sin^{-1}(1/2.417)=24.44°$

$\theta_c=\sin^{-1}(1/n_c)=\sin^{-1}(1/2.1.75)=34.85°$

$\theta_d/\theta_c=24.44°/34.85°=0.7$ . Answer