(Answered) You are taking a photograph of a poster on the wall of your

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You are taking a photograph of a poster on the wall of your dorm room, so you can't back away any farther than 2.0 m to take the shot. The poster is 0.40 m wide and 0.60 m tall, and you want the image to fit in the 24 × 36 mm frame of the film in your camera.

What is the longest focal length lens that will work?

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