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NEET Sample Paper NEET Sample Test Paper-2

  • question_answer
    In an electromagnetic wave, the electric and magnetising field are \[100\,V{{m}^{-1}}\] and \[0.265\,A{{m}^{-1}}.\]. The maximum rate of energy flow is:

    A)  \[26.5w/{{m}^{2}}\]        

    B)  \[36.5w/{{m}^{2}}\]

    C)  \[46.7\,w/{{m}^{2}}\]        

    D)  \[765\,w/{{m}^{2}}\]

    Correct Answer: A

    Solution :

    Here, \[{{\varepsilon }_{0}}=100V/m,\] \[{{B}_{0}}=0.265A/m\] Maximum rate of energy flow \[S={{\varepsilon }_{0}}\times \frac{{{B}_{0}}}{{{\mu }_{0}}}=100\times 0.265\,w/{{m}^{2}}\]


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