If the wavelength of a wave decreases but the speed remains constant, what happens to the frequency of the wave?

If the speed of a wave remains constant while the wavelength decreases, the frequency of the wave will increase. The frequency and wavelength of a wave are inversely related, meaning that as one increases, the other decreases. This relationship is described by the equation:

Speed (v) = Frequency (f) * Wavelength (λ)

Since the speed of the wave remains constant, if the wavelength decreases, the frequency must increase in order to maintain the same speed.