In Quincke's experiment the sound detected is changed from a maximum to a minimum when the sliding tube is moved through a distance of 2.50 cm. Find the frequency of sound if the speed of sound in air is `340 m s^-1`.

Answer

C, D

Explanation

Distance between two maximum to a minimum is given by
`=lamda/4=2.50cm`
`rarr lamda=10cm=10^-1m`
`We know v=nx`
`rarr n=V/lamda=340/10^-1`
`=3400Hz=3.4kHz`.