Jawabanmu

2014-05-13T19:32:20+07:00
h = 2 cm
s = 9 cm
f = 4 cm
m =....
h' =....

1/f = 1/s + 1/s'
1/4 = 1/9 + 1/s'
1/s' = 1/4 - 1/9
1/s' = 9/36 - 4/36
1/s' = 5/36 = 36/5
s' = 7,2cm

a. M= s'/s = 7,2/9 = 0,8 kali

b.  h' = m x h
     h' = 0,8 x 2 = 1,6 cm