A converging lens is placed 20.0 cm to the right of a diverging lens of focal length 6.0 cm. A beam of parallel light enters the diverging lens from the left, and the beam is again parallel when it emerges from the converging lens. Calculate the focal length of the converging lens.
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A converging lens is placed 20.0 cm to the right of a diverging lens of focal length 6.0 cm. A beam...
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