Name the part of the eye:
(i) that had real, inverted image of the object formed on it.
(ii) that controls the amount of light entering into the eye.
(iii) that helps in changing the focal length of the eye lens.

Academic Physics NCERT Class 10

(i) A real, inverted image of the object is formed on Retina.

(ii) Pupil controls the amount of light entering into the eye.

(iii) Ciliary muscles help in changing the focal length of the eye lens.

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Updated on: 10-Oct-2022

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Name the part of the eye:(a) which controls the amount of light entering the eye.(b) on which the image is formed.(c) which changes the focal length of eye-lens.
Part of the eye which controls the entering of light is called(I)Iris (ii) Cornea (iii) Lens (iv)Retina
How is the amount of light entering the eye controlled?
Which of the following controls the amount of light entering the eye?(a) ciliary muscles (b) lens (c) iris (d) cornea
Part of the eye which controls the entering of light is called$(a)$. iris $(b)$. cornea$(c)$. lens $(d)$. retina
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 ________.
To focus the image of a nearby object on the retina of an eye:(a) the distance between eye-lens and retina is increased. (b) the distance between eye-lens and retina is decreased. (c) the thickness of eye-lens is decreased. (d) the thickness of eye-lens is increased.
Name that part of the eye which is equivalent to the photographic film in a camera.
(a) What happens to the size of pupil of our eye (i) in dim light (ii) in bright light?(b) Name the cells on the retina of an eye which are sensitive to (i) bright light (ii) dim light (iii) sensation of colour.
The eyes of a person are focused (i) on a nearby object, and (ii) on a distant object, turn by turn. In which case:(a) the focal length of eye-lens will be the maximum?(b) the converging power of eye-lens will be the maximum?
A person walking in a dark corridor enters into a brightly lit room:(a) State the effect on the pupil of the eye.(b) How does this affect the amount of light entering the eye?
The image distance from the eye lens in the normal eye when we increase the distance of an object from the eye:(A) increases. (B) decreases.(C) remains unchanged. (D) depends on the size of the eyeball.
What is the name of:(a) the curved, transparent front surface of the eye?(b) the light-sensitive layer in the eye?
What changes take place in the shape of eye-lens:(a) when the eye is focused on a near object?(b) when the eye is focused on a distant object?
What changes the shape of lens in the eye?

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