The separation between a node and the next antinode in a vibrating air column is 25 cm. If the speed of sound in air is 340 m s-1, find the frequency of vibration of the air column.
Given:
Separation between the node and anti-node = 25 cm
Speed of sound in air
Frequency of vibration of the air column
The distance between two nodes or anti-nodes is .
We have:
Also,
Hence, the frequency of vibration of the air column is 340 Hz.