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 = 1.55) at an angle of θ = 33.2° 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.
20.68 °
(b) Find the refracted angle at the bottom surface.
33.18 °
(c) Find the lateral distance d by which the light beam is shifted.
.463 cm
(d) Calculate the speed of light in the glass.
1.935E8 m/s
(e) Calculate the time required for the light to pass through the glass block.
1.2E-8
(f) Is the travel time through the block affected by the angle of incidence?
No
Yes, a slightly larger angle will decrease the travel time.
Yes, a slightly larger angle will increase the travel time.