Author Question: What is the minimum thickness of a glycerin film (n = 1.47) on which light of wavelength 450 nm ... (Read 90 times)

ENagel · **on:** Jul 28, 2018

What is the minimum thickness of a glycerin film (n = 1.47) on which light of wavelength 450 nm shines that results in constructive interference of the reflected light? Assume the film is surrounded front and back by air.
a. 150 nm
c. 204 nm
b. 76.5 nm
d. 102 nm

Question 2

The noble gases, listed by increasing molecular weight, are He, Ne, Ar, Kr, Xe, and Rn. If samples of 1 mole each of these gases are placed in separate containers and heated to 300 K, which gas has the greatest internal energy and the molecules of which gas have the lowest average speed?
a. The He has the greatest internal energy, and Rn has the lowest speed. b. The Rn has the greatest internal energy, and He has the lowest speed. c. All the gases have the same internal energy, and Rn has the lowest speed. d. All the gases have the same internal energy, and He has the lowest speed.