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Q.

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

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a

340 Hz

b

510 Hz

c

42.5 Hz

d

none of these

answer is D.

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Detailed Solution

An open pipe and a closed pipe of equal length cannot have the same frequency at any harmonic.

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