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A compound lens system consists of two converging lenses, one at x=?20.0cm with focal length f1=+10.0cm,...

A compound lens system consists of two converging lenses, one at x=?20.0cm with focal length f1=+10.0cm, and the other at x=+20.0cm with focal length f2=+8.00cm. An object 1.00centimeter tall is placed at x=?50.0cm. What is the location of the final image produced by the compound lens system? Give the x coordinate of the image.

What is the focal length of the new lens at the origin?

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