1 Zwierciadło kuliste wklęsłe ma ogniskową 30 cm . Oblicz promień jego krzywizny .
dane:
f = 30 cm
szukane:
R = ?
R = 2f
R = 2 x 30 cm
R = 60 cm
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dane:
f = 30 cm
szukane:
R = ?
R = 2f
R = 2 x 30 cm
R = 60 cm
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