The fundamental frequency of an open is 450 Hz and that of a closed pipe is 350 Hz . The two pipes are joined together to form a longer pipe . Find the fundamental frequency of this new pipe . Take velocity of sound are 330 `m s^(-1)`.

Explanation

(i) Sum of lengths of open pipe and closed pipe gives length of longer pipe
(ii) `n_(o) = (v)/(2 l_(o)) , n_(c) = (v)/(4l_(c))`
`n_("long") = (v)/(4(l_(o) + l_(c)))`