A man can read the number of a distant bus clearly but he finds difficulty in reading a book.A man can read the number of a distant bus clearly but he finds difficulty in reading a book.
From which defect of the eye is he suffering?
What type of spectacle lens should he use to correct the defect?
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Hypermetropia (Long Sightedness).
Convex lens.
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Why does the sun appear reddish early in the morning? Will this phenomenon be observed by an observer on the moon? Justify your answer with a reason. OR
Why does sun appear reddish at sunrise? Give reason.