A sinusoidal standing sound wave inside a tube that is open at both ends must fit between the tube's ends
A) An integer number of wavelengths.
B) An integer number of half-wavelengths.
C) An integer number of quarter-wavelengths
D) An odd-integer number of half-wavelengths.
E) An odd-integer number of quarter-wavelengths.

Question

Quizplus · Accepted Answer

For a tube open at both ends, the sound wave must fit such that there are antinodes at both ends. This condition is met when the tube length is an integer number of half-wavelengths, allowing the wave to fit perfectly within the tube with antinodes at the openings.

A Sinusoidal Standing Sound Wave Inside a Tube That Is