Physics
Grade-10
Easy
Question
Match the following:
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Defects of vision
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Characteristics
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a
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Myopia
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i
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Shortening of eyeball
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b
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Hypermetropia
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ii
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Weakening of ciliary muscles
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c
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Presbyopia
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iii
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Excessively curved cornea
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d
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Cataract
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iv
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Elongation of eyeball
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v
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Cloudy eye lens
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- a – iii, iv, b - i, c – ii, d - v
- a – iii, b - i, c – iv, d - v
- a – iii, ii, b - i, c – iv, d - v
- a – iii, iv, b - i, c – ii, d - iv
Hint:
In myopia the picture forms before retina. In hypermetropia the image forms behind the retina. In presbyopia a combination of lens is used.
The correct answer is: a – iii, iv, b - i, c – ii, d - v
The correct option is a – iii, iv, b - i, c – ii, d - iv
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To a person with myopia, the nearby objects appear _____ and the distant objects appear_____.
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What is the eye defect shown in the picture below?
The correct option is a)Myopia.
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- Myopia means that the focus of the eye is in front of the retina instead of on it. The retina is the surface at the back of the eye that collects light.
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The correct option is a)Myopia.
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- Myopia means that the focus of the eye is in front of the retina instead of on it. The retina is the surface at the back of the eye that collects light.
- It converts light into electrical impulses that the brain interprets as images. Blurry vision can occur when the eye focuses light in front of the retina.
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