Question

In a resonance tube experiment to determine the speed of sound in air, a pipe of diameter `5 cm` is used . The column in pipe resonates with a tuning fork of frequency `480 H_(Z)` when the minimum length of the air column is `16 cm` . Find the speed in air column at room temperature.

Answer 1

Correct Answer - `226 ms^(-1)`
Fundamental frequency
`f=(v)/(4(l+0.6r))`

`:.` Speed of sound `v = 4f (l + 0.6 r)`
`rArrv=(4)(480)[(0.16)+(0.6)(0.025)]=336m//s`.