Which statement about electromagnetic radiation is correct?
A) The amplitude of a wave depends on the frequency.
B) As the wavelength decreases the energy decreases.
C) As the energy decreases the frequency decreases.
D) The wavelength and frequency are independent of each other.
E) Radio waves have a smaller wavelength than visible light.

Question

Quizplus · Accepted Answer

The energy of electromagnetic radiation is directly proportional to its frequency. Therefore, as the energy decreases, the frequency must also decrease.

Note: A is incorrect because the amplitude of a wave is independent of its frequency; B is incorrect because as the wavelength decreases, the energy actually increases; D is incorrect because wavelength and frequency are inversely proportional to each other; and E is incorrect because radio waves have a larger wavelength than visible light.

Which Statement About Electromagnetic Radiation Is Correct