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AP® Physics 1 & 2

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Moderate

AM and FM Waves

APPH12-W4KNLQ

Which of the following is true regarding a 90 MHz FM radio wave and a 900 kHz AM radio wave?

A

The 900 kHz AM radio wave is 100 times more energetic than the 90 MHz FM radio wave.

B

The energy of both radio waves is the same.

C

The wavelength of the 90 MHz FM radio wave is 100 times shorter than the 900 kHz AM radio wave.

D

The wavelength of the 90 MHz FM radio wave is 100 times longer than the 900 kHz AM radio wave.