Question

A guitar string is 5.4 meters long. What is the wavelength of a second harmonic standing wave?

Answer 1

For a guitar, length between two nodes is `lambda/2`

So,`l=lambda/2` This is for `1` st harmonic.

For `2` nd harmonic, `l=(2 lambda)/2`

or,`lambda =l`

Given, `l=5.4m`

so,`lambda =5.4m`