The two nearest harmonics of a tube closed at one end and open at other end are $220\,\, Hz$ and $260\,\, Hz.$ What is the fundamental frequency of the system .... $Hz$ ?
NEET 2017, Easy
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Nearest harmonics of an organ pipe closed at one end is differ by twice of its fundamental frequency.
$ 260 - 220 = 2v, v = 20\ Hz$
$ 260 - 220 = 2v, v = 20\ Hz$
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