Jawabanmu

2014-06-10T07:49:03+07:00
P= 100/PR (kalau cm) P=1/PR (kalau meter)
Jadi, P= 100/100 = 1 dioptri
2014-06-10T11:55:21+07:00
1/f=1/s-1/s'
s=tak hingga
jadi 1/f=-1/s'
-100/100=1D