Question

Standing waves on a guitar string form when waves traveling down the string reflect off a point where the string is tied down or pressed against the fingerboard.The entire series of distortions may be superimposed on a single figure, like this (Intro 2 figure) , indicating different moments in time using traces ofdifferent colors or line styles.

What is the wavelength λ of the standing wave shown onthe guitar string?

Answer 1

We know the distance between two successive nodes = λ / 2

From figure distance between two successive nodes = 20 cm

i.e. λ / 2 = 20 cm

so, the wavelength of the standing wave λ = 40cm