A guitar produces a sound which has a frequency of $300 H z$ and a wavelength of $1.3 m$ . Calculate the speed with which this sound travels.

300 m/s

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280 m/s

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400 m/s

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390 m/s

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Solution

The correct option is D
390 m/s

The wave velocity, v, frequency, f, and wavelength $λ$ are related as $v = f λ$ .
$f = 300 H z$ , $λ = 1.3 m$
Speed, $v = f λ = 300 \times 1.3 = 390 m / s$

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A guitar produces a sound which has a frequency of 300 Hz and a wavelength of 1.3 m. Calculate the speed with which this sound travels.

The correct option is D 390 m/s The wave velocity, v, frequency, f, and wavelength λ are related as v = fλ. f = 300 Hz, λ=1.3 m Speed,v=fλ=300×1.3=390 m/s

A guitar produces a sound which has a frequency of $300 H z$ and a wavelength of $1.3 m$ . Calculate the speed with which this sound travels.

The correct option is D
390 m/s

The wave velocity, v, frequency, f, and wavelength $λ$ are related as $v = f λ$ .
$f = 300 H z$ , $λ = 1.3 m$
Speed, $v = f λ = 300 \times 1.3 = 390 m / s$