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 need­ to be made ________.


(a) Most of the refraction of light rays entering the eye occurs at the outer surface of the cornea.

(b) The part of eye sensitive to light is retina.

(c) The part of eye which alters the size of the pupil is iris.

(d) When light is dim, the pupil becomes large.

(e) The iris controls the amount of light entering the eye.

(f) The ciliary muscles control the shape of the eye lens.

(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 thinner.

(h) To bring light from a near object to a focus on the retina of the eye, the convex eye-lens need­ to be made thicker.

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Updated on: 10-Oct-2022

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