As the distance of a sound wave from its source quadruples, how is the intensity changed?

Question

Ward

Physics

11 September, 21:01

As the distance of a sound wave from its source quadruples, how is the intensity changed?

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Brandon Moreno · Answer 1

Through the 1/r law, it was concluded that for the sound intensity or pressure is directly proportional to distance or radius. That is,

p = k/r

where k is the proportionality constant. If the distance of a sound wave is quadrupled then, the intensity of the sound is decreased to 1/4 of its original value.