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 m/s. The powder collects in heaps separated by a distance of 50 cm. Find the speed of sound waves in copper.
Given:
Speed of sound in air 
Velocity of sound in Kundt‘s tube 
Length at which copper rod is clamped 
Distance between the heaps:
On substituting the respective values in the above equation, we get:
1