A point A is located at a distance r = 1.5 m from a point source of sound of frequency n = 600 Hz. The power of the source P = 0.80 W. Neglecting the damping of the wave and assuming the velocity of sound in air to be 340 ms -1 . Find at the point A:
(use d air = 
kg m -3 ; π 2 = 
)
A
The pressure oscillation amplitude ( 
p) m .
p) m .
B
The oscillation amplitude of particles of the medium.
Text Solution
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CHECK THE SOLUTION
[ 5Nm -2 , 3 µm]
P 0 = 
= 
= 
= 5N /m 2
S 0 = 
= 
= 
= 
= 
= 3 × 10 –6 m = 3 µm
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