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JEE Main & Advanced Physics Ray Optics Question Bank Total Internal Reflection

  • question_answer
    A  cut diamond sparkles because of its [NCERT 1974; RPET 1996; AFMC 2005]

    A)            Hardness

    B)                                High refractive index

    C)            Emission of light by the diamond

    D)            Absorption of light by the diamond

    Correct Answer: B

    Solution :

               Due to high refractive index its critical angle is very small so that most of the light incident on the diamond is total internally reflected repeatedly and diamond sparkles. 


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