As the frequency of an electromagnetic wave increases
A)its speed must increase.
B)its wavelength must increase.
C)its amplitude must increase.
D)its energy must increase.

Question

Quizplus · Accepted Answer

The energy of an electromagnetic wave is directly proportional to its frequency, so as the frequency increases, the energy of the wave also increases. This is known as the photon energy equation, E = hf, where E is energy, h is Planck's constant, and f is frequency.

As the Frequency of an Electromagnetic Wave Increases