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  3. CEE Kerala Engineering

CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2009

  • question_answer
    A progressive wave\[y=A\sin (kx-\omega t)\]is reflected by a rigid wall at\[x=0\]. Then the  reflected wave can be represented by

    A)  \[y=A\sin (kx+\omega t)\]

    B)         \[y=A\cos (kx+\omega t)\]

    C)  \[y=-A\sin (kx-\omega t)\]

    D)        \[y=-A\sin (kx+\omega t)\]

    E)  \[y=A\cos (kx-\omega t)\]

    Correct Answer: D

    Solution :

    Given: Progressive wave \[y=A\text{ }sin(kx-cot)\] When reflected by rigid wall progressive wave                 \[y=A\sin [k(-x)-\omega t]\] or   \[y=A\sin [-(kx+\omega t)]\] or     \[y=-A\sin [kx+\omega t]\]


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