A sound is travelling in air at a speed of $343 m s^{- 1}$ . The wavelength of the sound wave is $0.1 c m$ . Find the frequency of the sound wave.

400000 H z

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343000 H z

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633000 H z

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543000 H z

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Solution

The correct option is B $343000 H z$
Given:
Speed of the sound, $v = 343 m s^{- 1}$
Wavelength, $λ = 0.1 c m = 0.001 m$

Let frequency be $f$ .
Speed of the wave is given as the product of frequency and wavelength.
$v = f λ$
$⟹ f = \frac{343 m s^{- 1}}{0.001 m}$
$f = 343000 H z$

Frequency of the sound wave is $343000 H z$ .

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A sound is travelling in air at a speed of 343 ms−1. The wavelength of the sound wave is 0.1 cm. Find the frequency of the sound wave.

The correct option is B 343000 HzGiven: Speed of the sound, v=343 ms−1 Wavelength, λ=0.1 cm=0.001 m Let frequency be f. Speed of the wave is given as the product of frequency and wavelength. v=fλ ⟹f=343 ms−10.001 m f=343000 Hz Frequency of the sound wave is 343000 Hz.

A sound is travelling in air at a speed of $343 m s^{- 1}$ . The wavelength of the sound wave is $0.1 c m$ . Find the frequency of the sound wave.