wave_mechanics organ_pipe_vibration_of_air_column Question 50
Question: In one metre long open pipe what is the harmonic of resonance obtained with a tuning fork of frequency 480 Hz
[J & K CET 2005]
Options:
A) Firstly
B) Second law of thermodynamics
C) Third
D) Fourth
Show Answer
Answer:
Correct Answer: C
Solution:
In case of open pipe, $ n=\frac{v}{2l} $ where v = speed of sound = order of mode of vibration
Therefore $ N=\frac{n\times 2l}{v} $
$ =\frac{480}{330}\times 2\times 1 $ = 2.909 (Here v = 330 m/s)
BETA
