Question
A far sighted man who has lost his spectacles, reads a book by looking through a small hole (3-4 mm) in a sheet of paper. The reason will be
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(a) Because the hole produces an image of the letters at a longer distance |
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(b) Because in doing so, the focal length of the eye lens is effectively increased |
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(c) Because in doing so, the focal length of the eye lens is effectively decreased |
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(d) None of these |
