A uniform tube of length 60 cm stands vertically with its lower end dipping into water . First two air column lengths above water are 15 cm, when the tube resonds to a vibrating fork of frequency 500 H_(Z) . Find the lowest frequency to the tube will respond when it is open at both ends.

A uniform tube of length 60 cm stands vertically with its lower end di

1.	A uniform tube of length 60 cm stands vertically with its lower end dipping into water . First two air column lengths above water are 15 cm, when the tube resonds to a vibrating fork of frequency 500 H_(Z) . Find the lowest frequency to the tube will respond when it is open at both ends.
Answer» SOLUTION :`(lambda)/(2) = (45 - 15) cm` `:. lambda = 60 cm` `nu = f lambda = (500) (0.6)` `= 300 m//s` Lowest frequency when OPEN from both ends is `(nu)/(2L)` . `= (300)/(2 xx0.6) = 250 H_(Z)`