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the fundamental frequency of a closed organ pipe is `50 Hz`. The frequency of the second overtone is
A. `100 Hz`
B. `150 Hz`
C. `200 Hz`
D. `250 Hz`

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Correct Answer - D
Second overtone `= (2k+1)f_(1)`
`= (2 xx 2 + 1) xx 50 =250 Hz`

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