How far must you place the lens from the slide
A slide projector needs to create a 84 cm high image of a 2.0 cm tall slide. The screen is 240 cm from the slide. Assume that it is a thin lens.
(a) What focal length does the lens need?
(b) How far should you place the lens from the slide?
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A slide projector needs to create a 84 cm high image of a 2.0 cm tall slide. The screen is 240 cm from the slide. Assume that it is a thin lens. (a) What focal length does the lens need? (b) How far should you place the lens from the slide?
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