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Question

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.

A
300 ms1
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B
280 ms1
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C
400 ms1
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D
390 ms1
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Solution

The correct option is D 390 ms1
Given:
Frequency, f=300 Hz
Wavelength, λ=1.3 m.

The wave velocity v, frequency f, and wavelength λ are related as:
v=fλ.
v=300×1.3=390 ms1.
Therefore, the speed with which this sound travels is 390 ms1

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