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MHT CET Physics question

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The fundamental frequency of open pipe is 'n'. If it is closed from one end then frequency of the 2 harmonic of closed pipe is higher by 200 Hz then 'n'. The value of 'n' is [MHT-CET 2023]

Answer: (A)

Solution

Open pipe: . A closed pipe has only odd harmonics, so its 2nd mode is

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Question ID VK-070481