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SSC General Science & Technology Sample Paper NCERT Sample Paper-1

  • question_answer
    A person will have brown eyes, blue eyes or black eyes depending upon the particular pigment present in the :

    A)  Cornea

    B)  Vitreous body

    C)  Iris                  

    D)  Choroid

    Correct Answer: C

    Solution :

    [c] The iris is a thin, circular structure in the eye, responsible for controlling the diameter and size of the pupil and thus the amount of light reaching the retina. The eye colour is defined by the colour of the iris. In optical terms, the pupil is the eye's aperture and the iris is the diaphragm that serves as the aperture stop.


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