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1/si = 1/12- 1/16
1/si= 8/96 -6/96
1/si = 2/96
si = 48 cm
So = 16cm
f = 12cm
Ditanya : Si?
Jawab :
1/f = 1/So + 1/Si
1/Si = 1/f - 1/So
1/Si = 1/12 - 1/16
1/Si = 4/48 - 3/48
1/Si = 1/48
Si = 48cm
Jadi jarak bayangannya adalah 48cm.