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Question
When you speak to your friend, which of the following parameters have a unique value in the sound produced?
Options
Frequency
Wavelength
Amplitude
Wave velocity
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Solution
Wave velocity
The frequency, wavelength and amplitude do not have a unique value in the sound produced.
The frequency (and wavelength) changes as the pitch of the sound varies, while the amplitude is different as the loudness varies. However, the speed of sound in the air at a particular temperature is constant, i.e., it has a unique value.
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