Задача 40327.

Matte light bulb in the form of a ball diameter of 6 cm diameter globe lights 26 cm. Determine the diameter of the full umbra and penumbra of the globe on the wall. Distance from the globe to the bulb 1 m from the wall of 2 m.

Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.

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