An organ pipe of length L that is open at one end resonates in its third harmonic with a wavelength of 2L/3.Is the other end of the pipe closed or open?
A)closed
B)open
C)We cannot tell from the information provided.

Question

Quizplus · Accepted Answer

Resonating in the third harmonic means there are three antinodes along the length of the pipe, with two nodes. The open end must be an antinode, so the closed end must be a node. Therefore, the pipe must be open at the other end for the third harmonic to have a wavelength of 2L/3.

An Organ Pipe of Length L That Is Open at One