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h = 1 cm
s = 3 cm
f = 2 cm
ditanyakan :
s' = ?
M = ?
h' = ?
sifat = ?
jawab :
1/f = 1/s + 1/s'
1/2 = 1/3 + 1/s'
1/s' = 1/2 - 1/3 = 3/6 - 2/6 = 1/6
s' = 6
s'/s = h'/h
6/3 = h'/1
h' = 2 cm
M = -s'/s = -6/3 = -2 kali (tanda mines menunjukan bayangan terbalik)
sifat = nyata terbalik diperbesar