A Slab of Glass Give a symbolic expression for the sideways displacement d, of a
ID: 2150284 • Letter: A
Question
A Slab of Glass Give a symbolic expression for the sideways displacement d, of a light ray passing through the slab of glass t, shown in the figure. The thickness of the glass is , its index of refraction is , and the angle of incidence is theta. Express your answer in terms of the variables t,n ,and theta.
Explanation / Answer
n = sin(theta)/sin(r) where r is the angle of 1st refraction. r = arcsin(sin(theta)/n) tan(r) = t/d d = t/tan(r) = t/tan(arcsin(sin(theta)/n))