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

  • question_answer
    The wavelength of sodium light in air is \[5890\,{AA}\]. The velocity of light in air is \[3\times {{10}^{8}}m{{s}^{-1}}.\] The wavelength of light in a glass of refractive index 1.6 would be close to  [DCE 2003]

    A) \[5890\,\,{AA}\]               

    B) \[3681\,\,{AA}\]

    C) \[9424\,\,{AA}\]               

    D) \[15078\,\,{AA}\]

    Correct Answer: B

    Solution :

    \[{{\lambda }_{g}}=\frac{{{\lambda }_{a}}}{{{\mu }_{g}}}\]\[=\frac{5890}{1.6}=3681\,{AA}\].


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