A 200-cm organ pipe with one end open is in resonance with a sound wave of wavelength 270 cm.The pipe is operating in its:
A)fundamental frequency
B)first harmonic
C)second harmonic
D)third harmonic
E)fourth harmonic

Question

Quizplus · Accepted Answer

An open-closed pipe resonates at odd harmonics. The length of the pipe is 200 cm, and the wavelength is 270 cm. The third harmonic (3rd) has a wavelength of 4/3 times the pipe length, which matches the given wavelength.

A 200-Cm Organ Pipe with One End Open Is in Resonance