JEE Main & Advanced Physics Ray Optics Sample Paper Topic Test - Refraction of Light Through Curved Surfaces

  • question_answer
    A light ray is incident on a transparent sphere of radius R as shown below, refractive index of the sphere (Assume paraxial incidence) is

    A) 1

    B) 3/2     

    C) 2/3

    D) 2

    Correct Answer: D

    Solution :

    [d] Using \[\frac{{{\mu }_{2}}}{v}-\frac{{{\mu }_{1}}}{u}=\frac{{{\mu }_{2}}-{{\mu }_{1}}}{R}\] \[\frac{\mu }{2R}-\frac{1}{\infty }=\frac{\mu -1}{R}\Rightarrow \frac{\mu }{2}=\frac{\mu -1}{1}\] \[\Rightarrow \]   \[\mu =2\]

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