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42. The black muscular object behind the cornea is(1) Iris(2) Pupil(3) Retina(4) Optic nerve

Answer»

The pupil is a hole located in the center of the iris of the eye that allows light to strike the retina. It appears black because light rays entering the pupil are either absorbed by the tissues inside the eye directly, or absorbed after diffuse reflections within the eye that mostlymissexiting the narrow pupil



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