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

  • question_answer
    The refractive index of water is 1.33. What will be the speed of light in water      [CBSE PMT 1996; KCET 1998]

    A)            \[3\times {{10}^{8}}\] \[m/s\]                                          

    B)            \[2.25\times {{10}^{8}}\] \[m/s\]

    C)            \[4\times {{10}^{8}}\] \[m/s\]                                          

    D)            \[1.33\times {{10}^{8}}\] m/s

    Correct Answer: B

    Solution :

               \[v=\frac{c}{\mu }=\frac{3\times {{10}^{8}}}{1.33}=2.25\times {{10}^{8}}\]m/s


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