A 35-mm slide (picture size is actually 24 by 36 mm) is to
Chapter 32, Problem 84GP(choose chapter or problem)
Problem 84GP
A 35-mm slide (picture size is actually 24 by 36 mm) is to be projected on a screen 1.80 m by 2.70 m placed 7.50 m from the projector. What focal-length lens should be used if the image is to cover the screen?
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