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a camera is equipped with a lens with a focal length of 30cm. when an object 2m (200cm) away is being photographed; how far from the field should the lens be placed? what is the magnification?
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a camera is equipped with a lens with a focal length of 30cm. when an object 2m (200cm) away is being
photographed; how far from the field should the lens be placed? what is the...