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S = 20 cm
f = - 30 cm (cermin cembung)
Ditanya:
S' = ------?
Sifat bayangan?
Jawab:
1/S' = 1/f - 1/S
= -1/30 - 1/20
= -2/60 - 3/60
= -5/60
S' = -60/5
= - 12 cm (Maya)
M = |S'/S|
= |-12/20|
= 0,6 x (Diperkecil)
Sifat bayangan:
1. Maya
2. Tegak
3. Diperkecil