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

  • question_answer
    A person wears glasses of power ? 2.5 D. The defect of the eye and the far point of the person without the glasses are respectively                                                                  [MP PET 1995]

    A)            Farsightedness, 40 cm     

    B)            Nearsightedness, 40 cm

    C)            Astigmatism, 40 cm           

    D)            Nearsightedness, 250 cm

    Correct Answer: B

    Solution :

                       Negative power is given, so defect of eye is nearsigntedness Also defected far point \[=-f=-\frac{1}{p}=-\frac{100}{(-2.5)}=40\,cm\]


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