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Sai Mowgli Khanna
Asked: 2022-11-10T08:47:01+05:30 In:

An organ pipe is closed at one end has fundamental frequency of 1500 Hz. The maximum number of overtones generated by this pipe which a normal person can hear is
A. `14`
B. `13`
C. `6`
D. `9`

An organ pipe is closed at one end has fundamental frequency of 1500 Hz. The maximum number of overtones generated by this pipe which a normal person can hear is
A. `14`
B. `13`
C. `6`
D. `9`
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1 Answer

  1. Correct Answer – C
    Critical hearing frequency in Nth mode then frequency of vibration `n=((2N-1)v)/(4l)=(2N-1)n_1`
    (where `n_1=`fundamental frequency of vibration)
    Hence `20,00=(2N-1)xx1500impliesN=7.1=7` Also, in closed pipe
    Number of over tones`=`(No. of mode of vibration)`-1=7-1=6`.

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