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NEET NEET SOLVED PAPER 2013

  • question_answer
    For a normal eye, the cornea of eye provides a converging power of 40 D and the least converging power of the eye lens behind the cornea is 20 D. Using this information, the distance between the retina and the cornea-eye lens can be estimated to be

    A)  5 cm           

    B)  2.5 cm

    C)  1.67cm        

    D)  1.5cm

    Correct Answer: C

    Solution :

    Given \[{{P}_{1}}=40D,\] and \[{{P}_{2}}=20D\] We have\[{{P}_{eff}}=40D+20D=60D\] \[\Rightarrow \] \[f=\frac{100}{{{P}_{eff}}}=\frac{100}{60}\] \[=1.67\,cm\]


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