An pipe of length L that is open at both ends is resonating at its fundamental frequency. Which statement about the sound is correct?
A) The wavelength is 2L and there is a displacement node at the pipe's midpoint.
B) The wavelength is L and there is a displacement antinode at the pipe's midpoint.
C) The wavelength is L and there is a displacement node at the pipe's midpoint.
D) The wavelength is 2L and there is a displacement antinode at the pipe's midpoint.

Question

Quizplus · Accepted Answer

For a pipe open at both ends, the fundamental frequency has a wavelength of 2L, with displacement nodes at both ends and an antinode at the midpoint.

An Pipe of Length L That Is Open at Both