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प्रश्न
How does the convex eye-lens differ from the ordinary convex lens made of glass?
उत्तर
The focal length of the convex eye lens and its converging power can be changed by the action of the ciliary muscles, whereas the focal length of a convex lens made of glass cannot be changed.
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संबंधित प्रश्न
Name the part of our eyes which helps us to focus near and distant objects in quick succession.
Give the scientific names of the following parts of the eye:
a clear window at the front of the eye.
List, in order, the parts of the eye through which light passes to reach the retina.
What shape are your eye-lenses:
when you look at your hand?
Explain clearly why, a person who has lost the sight of one eye is at a disadvantage compared with the normal person who has two good eyes.
Name the respective organs in which the following are located and mention the main function of each:
(i) Iris
(ii) Semicircular canals
State the Function:
Vitreous humour
Choose the Odd One Out:
Match the following:
| 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 accommodation |
Explain the role of the part of human eye responsible for power of accommodation of human eye.
