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

  • question_answer
    The wavelength of light in air and some other medium are respectively \[{{\lambda }_{a}}\] and \[{{\lambda }_{m}}.\] The refractive index of medium is  [RPMT 2003]

    A)            \[{{\lambda }_{a}}/{{\lambda }_{m}}\]                         

    B)            \[{{\lambda }_{m}}/{{\lambda }_{a}}\]

    C)            \[{{\lambda }_{a}}\times {{\lambda }_{m}}\]            

    D)            None of these

    Correct Answer: A

    Solution :

               \[{{\mu }_{m}}=\frac{c}{v}=\frac{n\,{{\lambda }_{a}}}{n\,{{\lambda }_{m}}}\]\[=\frac{{{\lambda }_{a}}}{{{\lambda }_{m}}}\]


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