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The projection lens in a certain slide projector is a single thin lens. A slide 23.9 mm high is to be projected so that its i
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Answer In a projector Usc conver loos OY converging lens. 1 no † hi u V. Given ; ho 23.9 mm 0.0239 m hi 1.86 m. a) For lens;u 2.99 78.82 0.0379 m And 18 2 3 4 = 79-82 X 0.0379 2 2.949 m : Focal length via I f V u 2.949 (-0.0379) 0-0379 + 2.949 tol-

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