wave_mechanics organ_pipe_vibration_of_air_column Question 43

Question: A student determines the velocity of sound with the help of a closed organ pipe. If the observed length for fundamental frequency is 24.7 m, the length for third harmonic will be

[RPET 2002]

Options:

A) 74.1 cm

B) 72.7 cm

C) 75.4 cm

D) 73.1 cm

Show Answer

Answer:

Correct Answer: A

Solution:

$ l _{2}=3l _{1}=3\times 24.7=74.1cm $