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CET Karnataka Medical CET - Karnataka Medical Solved Paper-2014

  • question_answer
    A plane electromagnetic wave of frequency 20 MHz travels through a space along x direction. If the electric field vector at a certain point in space is \[6V\text{ }{{m}^{-1}}\], what is the magnetic field vector at that point?

    A)  \[2T\]            

    B)  \[2\times {{10}^{-8}}T\]

    C)  \[\frac{1}{2}T\]          

    D)  \[1\times {{10}^{-8}}T\]

    Correct Answer: B

    Solution :

    : The magnitude of magnetic field is \[B=\frac{E}{c}=\frac{6V{{m}^{-1}}}{3\times {{10}^{8}}m\,{{s}^{-1T}}}=2\times 10h-8\]


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