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Physics, 02.06.2021 14:00 toya96

Intro camera întunecată,un izvor luminos, punctiform este situat la 30 cm de un disc opac cu diametrul de 6 cm, concentric cu acesta. Care este diametrul umbrei obținute pe un ecran situat la 50 cm de sursă?

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Intro camera întunecată,un izvor luminos, punctiform este situat la 30 cm de un disc opac cu diametr...
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