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P=1,5
s'=100 cm=1m
Ditanya :
M=...?
Jawab :
P= 1/f
1,5=1/f
f=0,67
<=>
1/f=1/s+1/s'
1/2/3= 1/s+1/s'
3/2-1/1=1/s'
s'=2
<=>
M=s'/s
=2/1
=2