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^{- 1}

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280 m s^{- 1}

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400 m s^{- 1}

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390 m s^{- 1}

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Solution

The correct option is D $390 m s^{- 1}$
The wave velocity $v$ , frequency $f$ , and wavelength $λ$ are related as $v = f λ$ .
Given, $f = 300 H z$ , $λ = 1.3 m$
Therefore, $v = f λ = 300 \times 1.3 = 390 m s^{- 1}$ .

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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 ms−1The wave velocity v, frequency f, and wavelength λ are related as v=fλ. Given, f=300 Hz, λ=1.3 m Therefore, v=fλ=300×1.3=390 ms−1.

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 $390 m s^{- 1}$
The wave velocity $v$ , frequency $f$ , and wavelength $λ$ are related as $v = f λ$ .
Given, $f = 300 H z$ , $λ = 1.3 m$
Therefore, $v = f λ = 300 \times 1.3 = 390 m s^{- 1}$ .