A stationary tuning fork is in resonance with an air column

Last updated: 6/7/2023

A stationary tuning fork is in resonance with an air column in a pipe If the tuning fork is moved with a speed of 2 ms 1 in front of the open end of the pipe and parallel to it the length of the pipe should be changed for the resonance to occur with the moving tuning fork If the speed of sound in air is 320 ms the smallest value of the percentage change required in the length of the pipe is