A lens with a focal length of 25 cm is placed 40 cm in

Chapter 19, Problem 42GP

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Problem 42GP

A lens with a focal length of 25 cm is placed 40 cm in front of a lens with a focal length of 5.0 cm. How far from the second lens is the final image of an object infinitely far from the first lens? Is this image in front of or behind the second lens?

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