Jawabanmu

2014-08-02T21:26:46+07:00
Diket: F= 20 cm ⇒ 10 cm
         S= 15 cm
Ditan: S'= .... ?
Jawab: 1/S +1/S' =1/f
           1/15 + 1/S' =1/10
           1/S' = 1/10 - 1/15
           1/S' = 3/30 - 2/30
           1/S' = 1/30
              S' = 30 cm



1 5 1
2014-08-02T21:31:51+07:00
1/S +1/S' =1/f
1/15 + 1/S' =1/10
1/S'= 1/10 - 1/15
1/S'= 3/30 - 2/30
1/S' = 1/30
S'= 30 cm