Author Question: A light beam is incident upon a still water surface. What is the maximum possible value for the ... (Read 78 times)

pepyto · **on:** Jul 28, 2018

A light beam is incident upon a still water surface. What is the maximum possible value for the angle of refraction? (nwater = 1.333).
a. 76.2
c. 54.4
b. 67.5
d. 48.6

Question 2

The thermal expansion of a solid is caused by:
a. the breaking of bonds between atoms.
b. increasing the amplitude of the atoms' vibration.
c. increasing the distance between equilibrium positions for the vibrating atoms.
d. all of the above.