A point source emits sound equally in all directions in a non-absorbing medium. Two points P and Q are at a distance of 2 m and 3 m respectively from the source. The ratio of the intensities of the waves at P and Q is
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Verified by ExpertsThe correct answer is:
A
The average power per unit area that is incident perpendicular to the direction of propagation is called the intensity, i.e.,
Here, 
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