In a resonance tube experiment t 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`. If the speed of sound in air at room temperature `= 6eta` (in `m//sec`). Find `eta`

Answer

56

Explanation

Fundamental frequnecy, `f = (v)/(4(l + 0.6r))`
`:'` apeed of sound `v = 4f(l + 0.6r)`
or `v = (4)(480)[(0.16) + (0.6)(0.025)] = 336 m//s`