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JEE Main & Advanced Physics Question Bank Human Eye and Lens Camera

  • question_answer
    A person cannot see the objects clearly placed at a distance more than 40 cm. He is advised to use a lens of power [DCE 2002; MP PMT 2002, 03]

    A)            ? 2.5 D                                    

    B)            + 2.5 D

    C)            ? 6.25 D                                  

    D)            + 1.5 D

    Correct Answer: A

    Solution :

               \[f=-\ 40\ cm\] and \[P=\frac{100}{-40}=-\ 2.5\ D\]


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