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The two nearest harmonics of a tube clos...

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?

A

`20 Hz`

B

`30 Hz`

C

`40 Hz`

D

`10 Hz`

Text Solution

Verified by Experts

Difference in successive frequencies of a pipe (open of closed) ` = (v)/(2 L)`
`(v)/(2L) = 260 - 220 = 40`
Fundamental frequnecy of closed pipe
`(v)/(4L) = 20 Hz`
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