Question

Use the exact values you enter to make later calculations.

A ray of light strikes a flat, 2.00-cm-thick block of glass (n = 1.69) at an angle of θ = 32.4° with respect to the normal (see figure below).

(a) Find the angle of refraction at the top surface and the angle of incidence at the bottom surface.
°

(b) Find the refracted angle at the bottom surface.
°

(c) Find the lateral distance d by which the light beam is shifted.
cm

(d) Calculate the speed of light in the glass.
m/s

(e) Calculate the time required for the light to pass through the glass block.
s

(f) Is the travel time through the block affected by the angle of incidence?

Yes, a slightly larger angle will decrease the travel time.

Yes, a slightly larger angle will increase the travel time.   

No

Answer 1