George, who stands 5 feet tall, finds himself 6 feet in front of
a convex lens and he sees his image reflected 31 feet behind the
lens. What is the focal length of the lens?
George, who stands 5 feet tall, finds himself 6 feet in front of a convex lens and he sees his image reflected 31 feet b
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answerhappygod
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George, who stands 5 feet tall, finds himself 6 feet in front of a convex lens and he sees his image reflected 31 feet b
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