Question

A sound wave travels at a speed of 339 m/s if wave length is 1.5cm what is frequency of the waves will it be audible

Answer 1

$\bf{\underline{\underline{Answer:}}}$

$\bf{\therefore Frequency = 22600 Hz}$

$\bf{\underline {Given:}}$

$⟹ Velocity\: of \:sound, \:v\: =\: 339\: m\: {s}^{-1}$

$⟹ Wavelength, \:λ \:=\: 1.5 \:cm\: =\: 0.015\: m$

$\bf{\underline {To\:Find:}}$

$⟹ Frequency,\: f\: = \:?$

$\bf{\underline{\underline{Step\: by\: step \:explanation:}}}$

We know that,

Speed = Wavelength × Frequency

339 = 0.015 × Frequency

Frequency = $\dfrac {339}{0.015} = 22600\: Hz \:$

Thus, frequency = 22600 Hz