Каково увеличение лупы с фокусным расстоянием 2 см?

  1. 9
  2. 9,5
  3. 10
  4. 12,5

📝 Detailed explanation

Г = D₀/F = 25/2 = 12,5, где D₀ = 25 см — расстояние наилучшего зрения.
10 / 16 (63%)
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