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Question

Too short eye ball and too flat lens produce


A
Astigmatism
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B
Presbyopia
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C
Near sightedness
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D
Far sightedness
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Solution

The correct option is C Far sightedness
When the eye ball becomes too short or lens get flattened, light rays instead of getting focussed on the retina, get focussed behind the retina. Hence, the image is formed behind the retina. This condition is called hypermetropia, also known as long-sightedness. In this disorder, vision of nearby objects gets blurred. It is corrected using convex rays which help to focus the rays on the retina.
So, the correct answer is 'Far sightedness'. 

Physics

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