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The Lens Formula Relating the Image Distance, P , to the Focal

Question 132
Short Answer
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Short Answer

The lens formula relating the image distance, p , to the focal length, f , and object distance, s , is img
The magnification of a lens is img
A movie projector is equipped with a 0.5-m focal length lens that is positioned 0.505 m in front of the film. The distance in front of the lens that a screen must be placed for an image to be in focus is __________.

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