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

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 phase change of 18 0 ∘ with velocity reversed, the same phase as the incident pulse with no reversal of velocity, a phase change of 18 0 ∘ with no reversal of velocity, the same phase as the incident pulse but with velocity reversed

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A pulse of a 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 π with the incident wave but wave velocity after reflection does not change.

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