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What will be the lowest resonance freque...

What will be the lowest resonance frequencies produced in an open pipe of effective length 0.68 m ? (Velocity of sound in air =340m/s)

A

125 , 325 Hz

B

250, 500 Hz

C

125, 250 Hz

D

250, 750Hz

Text Solution

Verified by Experts

The correct Answer is:
B
`n=(v)/(2l) = (340)/(2xx0.68) = (34000)/(2xx68)=250`
`n_1=2n=2xx250=500Hz`
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