Answer: An object to the left of a lens is imaged by the
Chapter 34, Problem 34.85(choose chapter or problem)
An object to the left of a lens is imaged by the lens on a screen 30.0 cm to the right of the lens. When the lens is moved 4.00 cm to the right, the screen must be moved 4.00 cm to the left to refocus the image. Determine the focal length of the lens
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