if a wave has a frequency of 120 Hz and a wavelength of 5m, it would have a speed of 600 m/s.

In one or two sentences, describe what would happen to the frequency of this wave if the wavelength is increased to 10m but the speed stays the same at 600 m/s.

1 answer

If wavelength increases then frequency decreases by the same factor.
v = f*w
600 = 120*5
So if w = 10. then,
600 = f*10. Solve for f.