Jawabanmu

2014-04-11T19:25:09+07:00
S'=f*s/s-f =10*7/7-10 =70/-3 =-23.33(kalau lensa cembung negatif berarti hasil ny posotif) M=s'/s =23.33/7
Jawaban paling cerdas!
2014-04-11T19:38:49+07:00
1/f=1/s + 1/s'
1/s'=1/f - 1/s
1/s'= 1/10 - 1/7
1/s' = 7-10/70
s' = - 70/3

M=s / s' = 70/3 :7 = 70/3 x 1/7 = 70/21 = 10/3


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