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

  • question_answer
    A man cannot see clearly the objects beyond a distance of 20 cm from his eyes. To see distant objects clearly he must use which kind of lenses and of what focal length  [MP PMT 2000]

    A)            100 cm convex                    

    B)            100 cm concave

    C)            20 cm convex                       

    D)            20 cm concave

    Correct Answer: D

    Solution :

               f = ? (defected far point) = ? 20 cm


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