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If loudness of sound of a barking dog at 4 m is 40dB ,then loudness at 8m from dog is (assume dog to be point of source) approx.?

VISHAL CHAUHAN , 6 Years ago

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1 Answers

Arun

Last Activity: 6 Years ago

loudness of sound is inversely proportional to the square of the distance.

Lesser the distance between the source and the listener, greater is the loudness of the sound heard by the listener and vice -versa.

let new loudness = x

hence

x/40 = 16/64

x = 640/64

x = 10dB

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