Question

which of these describes how the photoelectric effect works? shining a high frequency light over a metal will cause protons to be ejected. shining a low frequency light over a metal will cause protons to be ejected. shining a high frequency light over a metal will cause electrons to be ejected. shining a low frequency light over a metal will cause electrons to be ejected.

Explanation:

The photoelectric effect occurs when light of high - enough frequency (above the threshold frequency) shines on a metal surface, causing electrons to be ejected. Protons are not ejected in the photoelectric effect. Low - frequency light does not cause electron ejection if its frequency is below the metal's threshold frequency.

Answer:

Shining a HIGH frequency light over a metal will cause ELECTRONS to be ejected.