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

  • question_answer
    A far sighted man who has lost his spectacles, reads a book by looking through a small hole (3-4 mm) in a sheet of paper. The reason will be                                                         [CPMT 1977]

    A)            Because the hole produces an image of the letters at a longer distance 

    B)            Because in doing so, the focal length of the eye lens is effectively increased 

    C)            Because in doing so, the focal length of the eye lens is effectively decreased

    D)            None of these

    Correct Answer: C

    Solution :

                 Man is suffering from hypermetropia. The hole works like a convex lens.


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