The ratio of the energy of a photon to its frequency is
A) pi.
B) the photon's speed.
C) the photon's wavelength.
D) Planck's constant.
E) not known.

Question

Quizplus · Accepted Answer

The ratio of the energy of a photon to its frequency is given by Planck's constant. This relationship is described by the equation E = hf, where E is the energy of the photon, h is Planck's constant, and f is the frequency of the photon.

The Ratio of the Energy of a Photon to Its