Author Question: Light is reflecting off a wedge-shaped thin piece of glass producing bright and dark interference ... (Read 59 times)

tuffie · **on:** Jul 28, 2018

Light is reflecting off a wedge-shaped thin piece of glass producing bright and dark interference fringes. If a certain location has a bright fringe, a nearby point will have a bright fringe if the thickness of the glass increases by:
a. one wavelength of the light.
c. 1/8 of a wavelength of the light.
b. 1/4 of a wavelength of the light.
d. 1/2 of a wavelength of the light.

Question 2

If an average molecule diffuses to a displacement of 4 cm in 5 s, how long would it take for such a molecule to diffuse to a displacement of 16 cm?
a. 10 s
c. 36 s
b. 20 s
d. 80 s