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

  • question_answer
    A mark at the bottom of a liquid appears to rise by 0.1 m. The depth of the liquid is 1 m. The refractive index of the liquid is                                                                      [CPMT 1999]

    A)            1.33                                          

    B)            \[\frac{9}{10}\]

    C)            \[\frac{10}{9}\]                   

    D)            1.5v

    Correct Answer: C

    Solution :

                       Real depth = \[1\]\[m\]                    Apparent depth = \[1-0.1=0.9\]\[m\]            Refractive index \[\mu \]= \[\frac{\text{Real depth}}{\text{Apparent depth}}=\frac{1}{0.9}=\frac{10}{9}\]


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