Question

27. A spherical source of power 8 W and frequency 500 Hz
is emitting sound waves. What is the intensity of the waves
at a distance of 100 m ?
(a) 811 W/m2
(b) 2 x 10-4 W/m2
(c) 10-5 W/m2
(d) 2x 10-6 W/m2
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Answer 1

Answer:

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