Jawabanmu

Jawaban paling cerdas!
2014-05-18T20:29:14+07:00
1/So + 1/Si = 1/f
1/2,5 + 1/Si = 1/2
1/Si = 1/2 - 1/2,5
1/Si = (5-4)/10
1/Si = 1/10
Si= 10/1
Si= 10 cm

jd bay ada di 10 cm dari cermin
2014-05-18T20:30:00+07:00