The diagram below shows a wave with its wavelength indicated in red.

Question

Which of the following would happen if the wavelength of this wave was reduced by half?
A.
The frequency of the wave would increase.
B.
The amplitude of the wave would decrease.
C.
The amplitude of the wave would increase.
D.
The frequency of the wave would decrease.

Answer 1

When the wavelength of a wave is reduced by half, the frequency of the wave increases. This is because the speed of a wave is equal to the frequency multiplied by the wavelength (v = f * λ). If the speed remains constant and the wavelength decreases, the frequency must increase to compensate.

Therefore, the correct answer is:

A. The frequency of the wave would increase.