Question

question 22 of 25
to fully describe the ejection of electrons from a metals surface, scientists must consider which of the following to be quantized?
a. neither light nor matter
b. both light and matter
c. light only
d. matter only

Explanation:

The photoelectric effect, which is the ejection of electrons from a metal's surface, is explained by considering light as quantized (photons). Also, the energy levels of electrons in the metal (matter - related) are quantized. So both light and matter aspects need to be considered as quantized for a full description.

Answer:

B. Both light and matter