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The intensity level 1 m away from a point source is 40 dB. Threshold intensity of hearing is 10−12 W/m2. If there is no loss of power in air, then intensity level at 10 m from the source is

Answer»

The intensity level 1 m away from a point source is 40 dB. Threshold intensity of hearing is 1012 W/m2. If there is no loss of power in air, then intensity level at 10 m from the source is



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