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Question: Answered & Verified by Expert
Assume that the displacement (s) of air is proportional to the pressure difference Δp created by a sound wave. Displacement (s) further depends on the speed of sound (v), density of airρ and the frequency (f). If Δp~10 Pa,n~300 m/s,p~1 kg/m3 f~1000Hz, then s  will be of the order of (take the multiplicative constant to be 1 )
PhysicsWaves and SoundJEE MainJEE Main 2020 (05 Sep Shift 1)
Options:
  • A 3100mm
  • B 10 mm
  • C 110mm
  • D 1 mm
Solution:
2464 Upvotes Verified Answer
The correct answer is: 3100mm

S=P0BK

=P0PV2ωV

=P0PVω

=101×1000×300m

3100mm

 

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