A camera is equipped with a lens with a focal length of 21 cm. When an object 2.3 m (230 cm) away is being photographed,

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answerhappygod
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A camera is equipped with a lens with a focal length of 21 cm. When an object 2.3 m (230 cm) away is being photographed,

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A camera is equipped with a lens with a focal length of 21 cm.When an object 2.3 m (230 cm) away is being photographed, how farfrom the film should the lens be placed?
_______cm?
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