Since v = λ f, the speed v of a wave depends on its frequency f.
True/False
Answer:
Yes, it is true.
Here, 
is the wavelength, which is the distance across the wave repeats and (f) is the frequency, where the number of waves are passed at a given point.
Since, the speed of wave depends on the properties of the medium, where the wave is moving and also it is independent of wave properties.
Also an alteration in wavelength can affect the frequency with an inverse manner. Hence, if the frequency is either increase or decrease, then the speed also either increases or decreases respectively.