Question

An open pipe of length 33 cm resonates with frequency of 1000 Hz. If the speed of sound is $333\,m{{s}^{-1}},$ then this frequency is

• A. fundamental frequency of the pipe
• B. third harmonic of the pipe
• C. second harmonic of the pipe
• D. fourth harmonic of the pipe

Answer 1

Answer: (C)

second harmonic of the pipe

Answer 2

1000 Hz = Frequency of p th harmonic $=\frac{pV}{2l}=\frac{p\times 330}{2\times 33}$ $=\frac{p\times 330\times 100}{2\times 33}$ $p=2$