Question 479: Waves

Question

The two nearest harmonics of a tube closed at one end and open at other end are 220 Hz and 260 Hz. What is the fundamental frequency of the system ?

Accepted Answer

The difference of frequencies of closed pipe
$${{2v} \over {4l}} = 260 - 220 = 40\,Hz$$
So, the fundamental frequency $$f' = {v \over {4l}} = 20\,Hz$$

Answer

20 Hz

Answer

30 Hz

Answer

40 Hz

Answer

10 Hz

Waves

The two nearest harmonics of a tube closed at one end and open at other end are 220 Hz and 260 Hz. What is the fundamental frequency of the system ?

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