a convex lens made of glass from a sharp image on the screen for a particular position of object wi

Asked by  | 21st Dec, 2008, 08:39: PM

Expert Answer:

this is because the size of the puple, i. e., the aperture of the eye lens and there by its focal length, is controlled by the iris which automatically expands or contracts depending on the obkects.

Answered by  | 22nd Dec, 2008, 10:41: AM

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