Dik : S = 30 cm
f = 20 cm
Dit : s' =....?
jawab : 1/s' = 1/f + 1/s
1/s' = 1/20 + 1/30
1/s' = 3/60 + 2/60
= 5/60 (dibalikkan) = 60/5 = 12
Maaf kalau salah
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Dik : S = 30 cm
f = 20 cm
Dit : s' =....?
jawab : 1/s' = 1/f + 1/s
1/s' = 1/20 + 1/30
1/s' = 3/60 + 2/60
= 5/60 (dibalikkan) = 60/5 = 12
Maaf kalau salah