NEET Physics EM Waves NEET PYQ-EM Waves

  • question_answer
    The velocity of electromagnetic radiation in a medium of permittivity \[{{\varepsilon }_{0}}\] and permeability \[{{\mu }_{0}}\] is given by                                                                                             [AIPMPT (S) 2008]

    A)  \[\sqrt{\frac{{{\varepsilon }_{0}}}{{{\mu }_{0}}}}\]

    B)      \[\sqrt{{{\mu }_{0}}{{\varepsilon }_{0}}}\]

    C)  \[\frac{1}{\sqrt{{{\mu }_{0}}{{\varepsilon }_{0}}}}\]   

    D)       \[\sqrt{\frac{{{\mu }_{0}}}{{{\varepsilon }_{0}}}}\]

    Correct Answer: C

    Solution :

    Velocity of electromagnetic radiation is the velocity of light , i.e., \[c=\frac{1}{\sqrt{{{\mu }_{0}}{{\varepsilon }_{0}}}}\] where \[{{\mu }_{0}}\] is the permeability and \[{{\varepsilon }_{0}}\] is the permittivity of free space.


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