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  • question_answer
    When a biconvex lens of glass having refractive index 1.47 is dipped in a liquid, it acts as a plane sheet of glass. This implies that the liquid must have refractive index          [AIPMT (S) 2012]

    A)  equal to that of glass

    B)       less than one

    C)  greater than that of glass

    D)  less than that of glass

    Correct Answer: A

    Solution :

    If biconvex lens behave like plane sheet, ray will pass undeviated through it only when medium has same refractive index as that of biconvex lens.


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