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The screen is located at a distance of 21 cm from the hole into which is inserted a lens radius of 5 cm. Lens converging beam of rays falls, resulting in the screen image of a light spot with a radius of 3 cm. It turns out that if the lens is clean, spot radius changes. Find the focal length of the lens.
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- Updated on the site 20.01.2024
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The decision was a mistake. She is now fixed.
Detailed solution shorthand terms, formulas and laws used in the decision, the withdrawal of the calculation formula and the response.
If you have any questions to address, please. I try to help.
Detailed solution shorthand terms, formulas and laws used in the decision, the withdrawal of the calculation formula and the response.
If you have any questions to address, please. I try to help.
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