Oblicz f jesli x=5 a p=2 Dzial soczewki

dane: x = 5 p = 2 szukane: f = ? p = y/x 2 = y/x y = 2x 1/f = 1/x + 1/y 1/f = 1/x + 1/2x 1/f = 2/2x + 1/2x 1/f = 3/2x f = 2x/3 f = 2 * 5/3 f = 3,33