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J & K CET Medical J & K - CET Medical Solved Paper-2009

  • question_answer
    In a typical optical fibre, the difference between the refractive indices of core material and cladding material is of the order of

    A) \[{{10}^{-5}}\]                                  

    B)  \[{{10}^{-6}}\]

    C) \[{{10}^{-1}}\]                                  

    D)  \[{{10}^{-3}}\]

    Correct Answer: C

    Solution :

                     The refractive index of the glass used for making core\[({{\mu }_{1}}\approx 1.7)\]is slightly more than the refractive index of the glass \[(u\approx 1.5)\]used for making the cladding.


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