Question

What is the wavelength of a 285-Hz sound wave when the speed of sound is 375 m/s?A. 1.2 mB. 1.32 mC. 106.875 kmD 0.76 m

Answer 1

`B.\text{ }1.32\text{ }m`

Step-by-step explanation

The speed of a wave is given by the formula:

`v=\lambda *f`

where λ = wavelength

f = frequency

Hence, the wavelength of the wave is:

`\lambda=(v)/(f)`

Therefore, the wavelength of the sound wave is:

`\begin{gathered} \lambda=(375)/(285) \\ \lambda=1.32\text{ }m \end{gathered}`

The answer is option B.