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Human Eye

Where do most...

Question

Where do most of the refraction of light in human eye occur?

A

iris

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B

pupil

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C

cornea

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D

retina

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Solution

The correct option is C
cornea

Most of the refraction for the light rays entering the eye occurs at the outer surface of the cornea.

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Explain the function of Iris, Pupil and Retina. Differentiate near point and far point in human eye. [5 MARKS]

Q. This part of the human eye is filled with a clear watery fluid.
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(b) Retina
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Q. Fill in the following blanks with suitable words:
(a) Most of the refraction of light rays entering the eye occurs at the outer surface of the ___
(b) The part of eye sensitive to light is ___
(c) The part of eye which alters the size of the pupil is ___
(d) When light is dim, the pupil becomes ___
(e) The iris controls the amount of ___ entering the eye.
(f) The ciliary muscles control the shape of the ___
(g) To bring light from a distant object to a focus on the retina of the eye, the convex eye-lens needs to be made ___
(h) To bring light from a near object to a focus on the retina of the eye, the convex eye-lens needs to be made ___

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