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The _______ of a sound wave is defined as the amount of energy passing through a unit area of the

wave front in a unit of time.

Aamplitude
Bfrequency
Ccompression
Dintensity

Verified Answer :

This is the sound intensity.(answer D is the correct one). 

Sound intesity is the amount of sound energy (that is, energy that takes a form of vibration) per certain area, for example square meter. Its symbol is I and the unit is watt per square meter (\(\frac{w}{m^{2} }\))

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