Author Question: A flashlight beam is seen because of a. specular reflection. b. diffuse reflection. c. ... (Read 121 times)

SO00 · **on:** Jul 28, 2018

A flashlight beam is seen because of
a. specular reflection.
b. diffuse reflection.
c. dispersion.
d. refraction.

Question 2

Photoelectrons are ejected when monochromatic light shines on a freshly-prepared (oxide-free) sodium surface. In order to obtain the maximum increase in the number of electrons ejected per second, the experimenter needs to
a. increase the frequency of the light.
b. increase the intensity of the light.
c. increase the area illuminated by the light.
d. do all of the above.
e. do only (b) and (c) above.