JEE Main & Advanced Physics Ray Optics Question Bank Refraction of Light at Plane Surfaces

  • question_answer
    If \[{{\mu }_{_{0}}}\] be the relative permeability and \[{{K}_{0}}\] the dielectric constant of a medium, its refractive index is given by [MNR 1995]

    A)            \[\frac{1}{\sqrt{{{\mu }_{0}}{{K}_{0}}}}\]                    

    B)  \[\frac{1}{{{\mu }_{0}}{{K}_{0}}}\]

    C)            \[\sqrt{{{\mu }_{0}}{{K}_{0}}}\]                                       

    D)            \[{{\mu }_{0}}{{K}_{0}}\]

    Correct Answer: C

    Solution :

               \[\mu =\sqrt{\frac{\mu \,\varepsilon }{{{\mu }_{0}}{{\varepsilon }_{0}}}}=\sqrt{{{\mu }_{r}}K}\]


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