A closed pipe and an open pipe have their first overtones \( \mathr...

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A closed pipe and an open pipe have their first overtones
\( \mathrm{P} \) identical in frequency. Their lengths are in the ratio
[Roorkee 1999; WB-JEE 2012]
W
(a) \( 1: 2 \)
(b) \( 2: 3 \)
(c) \( 3: 4 \)
(d) \( 4: 5 \)
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