A point sound source is located on the perpendicular to the plane of a ring drawn through the center O of the ring. The distance between the point O and the source is λ = 1.00 m, the radius of the ring is R = 0.50 m. If the mean energy flow rate across the area enclosed by the ring is x 0 (in µW). Find 
. Given, at the point O the intensity of sound is equal to I 0 = 30 µW/m 2 and assuming the damping of the waves is negligible.
Text Solution
Verified by ExpertsCHECK THE SOLUTION
(4)
Ω = 2π (1 – cos α)
s = Ω .a 2 = 2πa 2 (1 – cos α)
Energy Å = 
= 
(1–cosα)
I 0 = 
⇒ Energy Å 
= (1–cosα)
= 2πl 2 I 0 
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