A Kundt's tube apparatus has a copper rod of length 1.0 m clamped at 25 cm from one of the ends. The tube contains air in which the speed of sound is `340 ms^-1` The powder collects in. heaps separated by a distance of 5.0 cm. Find the speed of sound waves in copper.

Answer

A, C, D

Explanation

`V_(rod)=?, V_(air)=340 m/s`
`L_1=25xx10^-2`
`d_3=5x10^-2meters`
`V_(rod)/V_(air)=(2L_1)/d_3`
`rarr V_1=(340xx25xx10^-2xx2)/(5xx10^-2)`
`=340m/s`