a person is unable to see objects distinctly the words printed on a newspaper . name the defects of vision he is suffering from. draw ray diagram to illustrate this defect , list its two possible causes. draw a ray daigram to show this defects may be corrected using lens of appropriate focal length.
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the person is suffering from hypermetropia or far sightedness
causes
1.thikinig of eye lens
2.elongation by birth (vertically)
lens
convex lens
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