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Q.

Two pipes have each of length 2m. One is closed at one end and the other is open at both ends. The speed of sound in air is 340m/s the frequency at which both can resonate is .....

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a

does not exist

b

42.5 Hz

c

340 Hz

d

510 Hz

answer is D.

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Detailed Solution

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l0=lc ; n0=V2l ; nc=V4l
n0≠nc does not exist

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