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ho = 4 cm
f = 6 cm
so = 12 cm
Dit : si
Jawab :
1/si = 1/f - 1/so
1/si = 1/6 - 1/12
1/si = 2/12 - 1/12
1/si = 1/12
si = 12 cm
So = 12 cm
1/f = 1/So + 1/Si
1/6 = 1/12 + 1/Si
1/Si = 1/6 - 1/12
1/Si = 1/12
Si = 12 cm