Propagation of Sound Waves — Question 3

Given,

wavelength (λ) = 100 m

wave velocity (V)= 20 m s^-1

Frequency (f) = ?

As we know,

Wave velocity (V) = Frequency (f) x Wavelength (λ)

Substituting the values, we get,

$20 = \text f \times 100 \\[0.5em] \Rightarrow \text f = \dfrac{20}{100} \\[0.5em] \text f = 0.2 \text{ Hz}$

Hence, f = 0.2 Hz