Question

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

Answer 1

Fundamental frequency, $f=\frac{v}{4(l+0.6r)}$
$\therefore$ Speed of sound $v=4f(l+0.6r)$
or $v=(4)(480)[(0.16)+(0.6)(0.025)]$
$=336m/s$