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    Question

    The part of the eye having the larges refractive index

    is :
    A cornea Correct Answer Incorrect Answer
    B aqueous humor Correct Answer Incorrect Answer
    C lens Correct Answer Incorrect Answer
    D lens Correct Answer Incorrect Answer

    Solution

    The cornea represents the strongest part of the refracting power of the eye, providing about 80% of the power of the system. The index of refraction of the cornea is about 1.376. Rays pass from the cornea into the watery fluid known as the aqueous humor which has an index of refraction of about 1.336.

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