Question: A slide projector is set up with its lens 6.0 m from the screen. The projected image on the screen is 1.5 m square for

A slide projector is set up with its lens 6.0 m from the screen. The projected image on the screen is 1.5 m square for a slide (the object) that is 2.5 cm square. What is the focal length of the projector lens

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