A Container of Flint Glass (N = 1 $\degree$ B)647 $\degree$ C)411 $\degree$

Multiple Choice

A container of flint glass (n = 1.66) holds a small quantity of benzene (n = 1.501) .What is the critical angle for internal reflection of a ray in the glass when it is incident on the glass-to-liquid surface?

A) 89.5 $\degree$
B) 64.7 $\degree$
C) 41.1 $\degree$
D) 37.0 $\degree$