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.......

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Solution

(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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Similar questions

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 ___

Match the following in most appropriate way:
$\begin{matrix} Part of eye & Function a) Iris & p) Converts the light into neural signals, and send these signals on to the brain for visual recognition . b) Pupil & q) Primarily focuses and controls the entrance of light into the eye. c) Retina & r) Controls size of pupil and amount of light reaching the retina. d) Cornea & s) Focuses light onto the retina and help the eye to focus on objects at different distances. \end{matrix}$

Q. Match the following:

\begin{matrix} Part of eye & Function a) Iris & p) Converts the light into neural signals, and sends these signals to the brain for visual recognition . b) Lens & q) It bends the light onto the lens. c) Retina & r) Controls size of pupil and amount of light reaching the retina. d) Cornea & s) Focuses light onto the retina and helps the eye to focus objects at different distances. \end{matrix}

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