A closed organ pipe has a length of 0.30 meters. What will be the wavelength of the fundamental wavelength of sound produced by this closed pipe?

Answer 1

If it is closed on both ends you have a node on each end and half a wavelength fits in perfectly so lambda = 2 * 0.30 = 0.60
If it were closed on one end and open on the other then you would have a node on the closed end and big noise on the open end. 1/4 wave fits in. Then Lambda would be 4 * Length