A 31.0-cm-focal-length converging lens is 21.0 cm behind a
Chapter 32, Problem 60P(choose chapter or problem)
Problem 60P
A 31.0-cm-focal-length converging lens is 21.0 cm behind a diverging lens. Parallel light strikes the diverging lens. After passing through the converging lens, the light is again parallel. What is the focal length of the diverging lens? [Hint: first draw a ray diagram.]
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