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Physics, 12.02.2021 14:20 Jessicawilliams3569

Диаметр источника света 0,2 м, расстояние до экрана 2 м. На каком минимальном расстоянии от экрана следует разместить шар диаметром 0,08 м, чтобы он вообще не отбрасывал тень на экран, а давал только половину тени. Линия, проходящая через центры источника света и шара, перпендикулярна плоскости экрана.​

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Диаметр источника света 0,2 м, расстояние до экрана 2 м. На каком минимальном расстоянии от экрана с...
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