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Tube A has both ends open while tube B has one end closed, the tubes being otherwise identical. The ratio of the fundamental frequency of A to that of B is

Asked in JEE Main 2002 · Closed and open pipes

Answer: (3) 2:1

Step-by-step solution

Open pipe: f_A=v/(2L). Closed pipe: f_B=v/(4L).

(f_A)/(f_B)=2, i.e. 2:1.

Why the other options are wrong

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