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to increase loudness of sound by four times by how much should the amplitude of vibration be changed
 

Asked by Sanskriti 4th January 2016, 10:23 AM
Answered by Expert
Answer:

Hi Sanskriti Bisaria,

The relation between the loudness or intensity of sound and amplitude in air is given as

begin mathsize 12px style straight L proportional to space straight A squared or space straight L equals space kA squared end style

where, k is a constant.

If the loudness of sound is increased by four times then the amplitude must be doubled.

That is,L' = k(2A)2

Answered by Expert 4th January 2016, 6:11 PM
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