Question

The fundamental frequency of a closed organ pipe is same as the first overtone frequency of an open pipe. If the length of open pipe is `50 cm`, the length of closed pipe is
A. `25 cm`
B. `12.5 cm`
C. `100 cm`
D. `200 cm`

Answer 1

Correct Answer - B
Closed , Open
`(V)/(4l_(1)) = (V)/(l_(2))`
`l_(2) = 4l_(1)`
`l_(1) = (l_(2))/(4) , = (50)/(4) = 1.25 cm`