Though This Would Be Tricky to Do in Practice, Suppose

Multiple Choice

Though this would be tricky to do in practice, suppose we could increase the frequency of light illuminating the cathode of the apparatus shown in figure Q4.1a while holding the intensity of that light constant. What would Einstein's photon model predict would happen to the value displayed by the ammeter as the frequency increases? (Assume that the light's frequency is always above the cathode's cutoff frequency.)

A) It should increase.
B) It should remain the same.
C) It should decrease.
D) It might vary in a complicated way.