A 3.0 m organ pipe is open at both ends and contains air. The speed of sound in air is 331 m/s. What is the wavelength of the lowest frequency mode?
A) 1.5 m
B) 3.0 m
C) 6.0 m
D) 9.0 m
E) 12.0 m

Question

Quizplus · Accepted Answer

The lowest frequency mode for an open pipe is when there is one-half of a wavelength present in the pipe. Therefore, the wavelength of this mode is twice the length of the pipe, or 6.0 meters.

A 30 M Organ Pipe Is Open at Both Ends and and Contains