A Slide Projector Needs to Focus the Image of a 24.0-Mm

question 133

Short Answer

A slide projector needs to focus the image of a 24.0-mm × 36.0-mm slide onto a square
screen 1.50 m on each side. You want to fill the screen as completely as possible without
any of the image falling beyond the screen. Due to space constraints in the projector, the
slide must be placed 10.5 cm from the lens.
(a) What magnification does the projector produce?
(b) How far from the lens should the screen be placed?
(c) What focal length projector lens is needed?

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