Short Note

The frequency of the sound emitted by the loudspeaker is 1020 Hz. Calculate the wavelength of the sound wave in air in cm where its velocity is 340 m/s.

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#### Solution

We have to find the wavelength of the sound wave. We have frequency and velocity of sound wave.

We know the relation between velocity, frequency, and wavelength `lambda = v/f`,

where ν is the velocity, *f* the frequency, and λ the wavelength.

So,

`lambda = 340/1020` m

= 0.33 m

Therefore, wavelength of the sound wave is 33.3 cm.

Concept: Propagation of Sound

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