Question

What is the critical angle for light traveling from ice (n=1.309) into air?

a. 39.8⁰
c. 59.8⁰
b. 49.8⁰
d.
69.8°

Answer 1

b. 49.8

Step-by-step explanation:

θc = sin^-1(1/1.309) = 49.81