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A 15-cm-focal-length converging lens is 20 cm to the right of an 8.0-cm-focal-length converging lens. A...

A 15-cm-focal-length converging lens is 20 cm to the right of an 8.0-cm-focal-length converging lens. A 2.9-cm-tall object is distance L to the left of the first lens.

Part A) For what value of L is the final image of this two-lens system halfway between the two lenses?

Part B) What is the height of the final image?

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