Question

In an experiment to study the photoelectric effect, a beam of monochromatic light is aimed at a cathode. However, the cathode does not release electrons. Which change to the experiment is most likely to cause the release of electrons?
A. increasing the frequency of the monochromatic light
B. decreasing the frequency of the monochromatic light
C. increasing the intensity of the monochromatic light
D. aiming the beam of light at the anode instead of the cathode

Answer 1

I think the answer is the first one