The critical angle for light rays passing from flint glass (n = 1.70)into air is about
A)3.4º
B)36º
C)44º
D)54º
E)90º

Question

Quizplus · Accepted Answer

The critical angle can be calculated using Snell's Law, where n1*sin(theta_c) = n2*sin(90 degrees), with n1 being the refractive index of the initial medium (flint glass, n = 1.70) and n2 being the refractive index of the second medium (air, n ≈ 1.00). Solving for the critical angle (theta_c) gives a value close to 36 degrees.

The Critical Angle for Light Rays Passing from Flint Glass