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प्रश्न
Which of the following changes occur when you walk out of bright sunshine into a poorly lit room?
(a) the pupil becomes larger
(b) the lens becomes thicker
(c) the ciliary muscle relaxes
(d) the pupil becomes smaller
उत्तर
the pupil becomes larger
The pupil becomes larger when you walk out of bright sunshine into a poorly lit room, to allow more light to enter the eye.
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संबंधित प्रश्न
The human eye can focus objects at different distances by adjusting the focal length of the eye lens. This is due to ______.
A person walking in a dark corridor enters into a brightly lit room:
State the effect on the pupil of the eye.
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
Choose the correct answer.
Aperture controlling passage to light into the eye is ___________
Long answer question
Draw the neat labelled diagram of the Sectional view of the human eye.
Which cells of the retina enable us to see coloured objects around us?
With neat, labeled diagram describe the structure of retina of eye.
| Column I | Column II | ||
| 1 | Retina | a | Path way of light |
| 2 | Pupil | b | Far point comes closer |
| 3 | Ciliary muscles | c | near point moves away |
| 4 | Myopia | d | Screen of the eye |
| 5 | Hypermetropia | e | Power of accomodation |
The thin, transparent extension of sclerotic layer found in front of the lens is ______.
Where is the following located?
Yellow spot
