Question

A pulse of a wave train travels along a stretched string and reaches the fixed end of the string. It will be reflected back with :

• A. a phase change of ${180}^o$ with velocity reversed
• B. the same phase as the incident pulse with no reversal of velocity
• C. a phase change of ${180}^o$ with no reversal of velocity
• D. the same phase as the incident pulse but with velocity reversed

Answer 1

The correct option is A a phase change of ${180}^o$ with velocity reversed

A pulse of wave train when travels along a stretched string and reaches the fixed end of the string, then it will be reflected back to the same medium and the reflected ray suffers a phase change of $\pi$ with the incident wave but wave velocity after reflection reverses its direction.