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Unformatted text preview: Problem 26 (like 26.14): A thin vacuum container is made from a sheet of shiny aluminum foil. The air pressure forms the foil into beautiful concave mirror, but you are worried that it may pop suddenly and ruin the delicate experiment inside the container. The distance from the mirror where your finger and its image in the mirror are up and down pointing at each other and have the same size is 0.5 m. What is the radius of curvature of the mirror? a) 1 m; b) 2 m; c) 0.707 m; d) 0.5 m; e) 0.25 m. Answer The tip of your finger is at the center of curvature because the light rays are returning to the same point. Thus the radius of curvature is 0.5 m....
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- Spring '04