A far sighted man who has lost his spectacles, reads a book…

Physics Ray Optics Human Eye and Lens Camera MCQ (Single Correct)

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

Because the hole produces an image of the letters at a longer distance

Because in doing so, the focal length of the eye lens is effectively increased

Because in doing so, the focal length of the eye lens is effectively decreased

None of these

Text Solution

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The correct answer is:

Man is suffering from hypermetropia. The hole works like a convex lens.

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