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An organ pipe of length 0.4m is open at both ends . The speed of sound in air is `340ms^(-1)` . The fundamental frequency is
A. 400Hz
B. 425Hz
C. 450Hz
D. 475Hz

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Best answer
Correct Answer - B
`n=(v)/(4l) = (340)/(4xx0.4)`
`=3400/8 = 425Hz`

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