Farsighted people, who have lost their spectacles, can still read a book by looking through a small (3–4 mm) hole in a sheet of a panel because (1) Because the fine hole produces an image of the letters at a longer distance. (2) Because in doing so, the distance of the object is increased. (3) Because in doing so, the focal length of the eye lens is effectively decreased. (4) Because in doing so, the focal length of the eye-lens is effectively increased.

Farsighted people, who have lost their spectacles, can still read a bo

1.	Farsighted people, who have lost their spectacles, can still read a book by looking through a small (3–4 mm) hole in a sheet of a panel because (1) Because the fine hole produces an image of the letters at a longer distance. (2) Because in doing so, the distance of the object is increased. (3) Because in doing so, the focal length of the eye lens is effectively decreased. (4) Because in doing so, the focal length of the eye-lens is effectively increased.
Answer» (3) Because in doing so, the focal length of the eye lens is effectively decreased.

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