Question

Oblicz f jesli x=5 a p=2


Dzial soczewki

Answer 1

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