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Sound intensity is proportional to the _________ of sound pressure.

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Sound intensity is proportional to the _________ of sound pressure.

(a) cube

(b) square

(c) inverse square

(d) inverse square root

I got this question in an international level competition.

My doubt is from Mechanism of Hearing topic in portion Audiometry of Biomedical Instrumentation

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Right option is (b) square

Explanation: Sound intensity is proportional to the square of sound pressure. Sound pressure, for a given sinusoidal event, is related linearly to both amplitude and frequency. Sound intensity may be defined as the amount of energy flow per unit time through a unit area perpendicular to the direction of energy flow.

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