Calculate the wavelength of a sound wave travelling in air with a frequency of 20 Hz.
Assume the speed of the sound wave in air is 330 m/s.

15 m

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20 m

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16 m

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16.5 m

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Solution

The correct option is D 16.5 m
To find wavelength (λ) from frequency (f), we can use
Speed of sound wave, v = f $\times$ λ .
Speed of sound wave = v = 330 m/s
Frequency = 20 Hz
Therfore,
V= f $\times$ λ
330 m/s = 20 $\times$ λ
λ= 330/20 = 16.5 m

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Calculate the wavelength of a sound wave travelling in air with a frequency of 20 Hz. Assume the speed of the sound wave in air is 330 m/s.

The correct option is D 16.5 mTo find wavelength (λ) from frequency (f), we can use Speed of sound wave, v = f × λ . Speed of sound wave = v = 330 m/s Frequency = 20 Hz Therfore, V= f × λ 330 m/s = 20 × λ λ= 330/20 = 16.5 m

Calculate the wavelength of a sound wave travelling in air with a frequency of 20 Hz.
Assume the speed of the sound wave in air is 330 m/s.

The correct option is D 16.5 m
To find wavelength (λ) from frequency (f), we can use
Speed of sound wave, v = f $\times$ λ .
Speed of sound wave = v = 330 m/s
Frequency = 20 Hz
Therfore,
V= f $\times$ λ
330 m/s = 20 $\times$ λ
λ= 330/20 = 16.5 m