How much energy is in an 89.7 MHz photon of FM-radiation?
A)2.2 *10-33 J
B)9.5 * 10-27 J
C)7.4 *10-42 J
D)5.9 * 10-26 J
E)3.7 * 10-25 J

Question

Quizplus · Accepted Answer

The energy of a photon is given by E=hf, where h is Planck's constant and f is the frequency of the photon. Substituting the given frequency of 89.7 MHz (or 89.7 million Hz) gives E=(6.626 x 10^-34 J s)(89.7 x 10^6 Hz) = 5.9 x 10^-26 J. Therefore, the answer is D.

How Much Energy Is in an 89