A wave on a stretched string is reflected from a fixed end P of the string.The phase difference, at P, between the incident and reflected waves is:
A)"0 rad"
B)"$\pi$rad"
C)"$\pi$/2 rad"
D)"depends on the velocity of the wave"
E)"depends on the frequency of the wave"

Question

Quizplus · Accepted Answer

When a wave on a stretched string is reflected from a fixed end, the reflected wave undergoes a phase change of π radians (or 180 degrees) relative to the incident wave. This is because the fixed end forces the displacement of the wave at that point to be zero, leading to an inversion of the wave upon reflection.

A Wave on a Stretched String Is Reflected from a Fixed