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Q.

The energy passing per second per unit are normal to the direction of energy flow is called ____ of sound.


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Detailed Solution

The energy passing per second per unit is normal to the direction of energy flow is called intensity of sound.
Intensity is the energy passing per second per unit area normal to the direction of energy flow. It does not depend upon the sensitivity of the ear. It is objective and can be measured by auditory equipment independent of an observer’s hearing. The unit of intensity is Wattm2.
 
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