Jawabanmu

2014-04-18T09:09:33+07:00
Dik :
f = 50 cm

dit :
P = .... ?

jawab :
P =100 / f
= 100 / 50
= 2 D
2014-04-18T09:09:43+07:00
Dik.f=50cm
dit.P=...

P=100/f
  =100/50
  =2 Dioptri