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CMC Medical CMC-Medical Ludhiana Solved Paper-2013

  • question_answer
    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

    B)  a phase change of \[180{}^\circ \] with no reversal of velocity

    C)  the same phase as the incidence pulse with no reversal of velocity

    D)  a phase change of \[180{}^\circ \] with velocity reversed

    Correct Answer: D

    Solution :

                    On reflection from fixed end (denser medium) a phase difference of n is introduced and velocity is reversed.


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