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an object is located 25.5 cmcm from a certain lens. the lens forms a real image that is twice as high as the object. part a what is the focal length of this lens?
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an object is located 25.5 cmcm from a certain lens. the lens forms a real image that is twice as high as the object. part a what is the focal length of this lens?

User Simon Featherstone
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Answer: 17.0

Explanation: Magnification = the height of the image ÷ by the height of the object

Magnification = (focal length)/(focal length - cross' distance from the lens)

User Ninita
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