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Grade upto college level Wave Motion

The first overtone frequency of a closed organ pipe P1 is equal to the fundamental frequency of an open organ pipe P2. If the length of the pipe P1 is 30 cm, what will be the length of P2?

Profile image of Shane Macguire
12 Years agoGrade upto college level
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1 Answer

Profile image of Deepak Patra
12 Years ago
Sol. Let the length will be l. Here given that V = 340 m/s and n = 20 Hz Here λ/2 = l ⇒ λ = 2l We know V = nλ⇒ l = V/n = 340/2 * 20 = 34/4 = 8.5 cm (for maximum wavelength, the frequency is minimum).