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Manipal Engineering Manipal Engineering Solved Paper-2010

  • question_answer
    A beam of light is incident at 60° to a plane surface. The reflected and refracted rays are perpendicular to each other than refractive index of the surface is

    A)  \[\sqrt{3}\]                                       

    B) \[\frac{1}{\sqrt{3}}\]

    C)  \[\frac{1}{2\sqrt{3}}\]                  

    D)         None of these

    Correct Answer: A

    Solution :

    According to Brewsters law \[\mu =\tan {{i}_{p}}=\tan {{60}^{o}}=\sqrt{3}\]


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