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

  • question_answer
    A short sighted person can see distinctly only those objects which lie between 10 cm and 100 cm from him. The power of the spectacle lens required to see a distant object is   [MP PET 1992]

    A)            + 0.5 D                                    

    B)            ? 1.0 D

    C)            ? 10 D                                      

    D)            + 4.0 D

    Correct Answer: B

    Solution :

                       \[f=-\ d=-\ 100\ cm=-\ 1\ m\]            \[\therefore P=\frac{1}{f}=\frac{1}{-1}=-\ 1\ D\]


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