Answer: When an object is placed 60.0 cm from a certain
Chapter 23, Problem 74GP(choose chapter or problem)
Problem 74GP
When an object is placed 60.0 cm from a certain converging lens, it forms a real image. When the object is moved to 40.0 cm from the lens, the image moves 10.0 cm farther from the lens. Find the focal length of this lens.
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