Consider three types of tubes filled with air: closed, open, and half-closed. Assume that an external force is used to move (oscillate) a piston harmonically back and forth with an angular frequency, ù_ext, similar to the frequency of the first harmonic of the standing wave forming in the tube, ù_standing. Which tube will experience resonance (increase of amplitude of oscillations)? A)only the closed and the half-closed pipes B)only the closed pipe C)only the half-closed pipe D)all three pipes

Question

Quizplus · Accepted Answer

Resonance occurs when the external frequency matches the natural frequency of the system. Since the external frequency is similar to the frequency of the first harmonic of the standing wave in all three types of tubes, all three will experience resonance.

Consider Three Types of Tubes Filled with Air: Closed, Open