A pulse or a wave train travels along a stretched string and reaches the fixed end of the string. It will be reflected back with
A
The same phase as the incident pulse but with velocity reversed
BA phase change of $180^o$ with no reversal of velocity
C
The same phase as the incident pulse with no reversal of velocity
DA phase change of $180°$ with velocity reversed
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DA phase change of $180°$ with velocity reversed
d On reflection from fixed end (denser medium) a phase difference of $\pi $ is introduced.
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