Question:-
The speed of a wave is 40 m/s. If the wavelength is 80 centimeters, what is the frequency of the wave ?
Answer:-
Given:-
Velocity (V) = 40 m/s
Wavelength
= 80 cm = 0.8 m
To Find:-
The frequency (F) of the wave.
Solution:-
We know,

40 = F × 0.8
F =

F = 50
The frequency of the wave is 50 Hz. [Answer]