A ray of light strikes a flat, 2.00-cm-thick block of glass (n = 1.54) at an angle of ? = 29.2° with respect to the normal (see figure below).
(a) Find the angle of refraction at the top surface.
°
(b) Find the angle of incidence at the bottom surface and the refracted angle.
°
(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 increase the travel time.
No
Yes, a slightly larger angle will decrease the travel time.