Aim: To determine the velocity of sound in a rod
Instruments required: kundt's tube, Lycapodium powder, resined leather.
Procedure: Kundt's tube is a glass tube. Lycapodium powder is introduced in to kundt's tube with the help of a scale. A rod is then introduced to the tube. This rod is clamped exactly at the midpoint. The free end of the rod is stroked longitudinally using a piece of resined leather. A very shrill sound is produced. Use the piston to form well defined lycopodium powder loops. Length of the loop(l) is measured. If 'L' is the length of the rod and 'v' the velocity of sound in air, then velocity of sound in rod = vxl/L.
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