Answer:
125 Hz
Explanation:
The frequency of the wave can be found by using the formula
[tex]f = \frac{c}{ \lambda} \\ [/tex]
where
c is the velocity of the wave
[tex] \lambda[/tex] is the wavelength
From the question we have
[tex]f = \frac{250}{2} = 125 \\ [/tex]
We have the final answer as
125 Hz
Hope this helps you
