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Two stereo speakers are separated by a distance of 2.40 m. A person stands at a distance of 3.20 m directly in front of one of the speakers as shown in figure. Find the frequencies in the audible range (20-2000 Hz) for which the listener will hear a minimum sound intensity. Speed of sound in air `= 320 ms^-1`

A

`160(2n+1)`

B

`320(2n+1)`

C

`200(2n+1)`

D

`100(2n+1)`

Text Solution

Verified by Experts

The correct Answer is:
C
Path difference `Deltax=4-3.2=0.8m`
For minima `Deltax=(2n+1)(lambda)/(2)`
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