1)Dik =F = 20cm =Si = 30cm DIT =Si =H 2)Dik=So =48cm =Ho =6 cm =Hi =18cm Dit=Si =F =M 3)Dik =So=10cm =Si=15cm DIT =F 4)Dik =So=30cm =R. =10CM =Ho=10cm Dit

1. s' = (s × f) / (s - f)
s' = (30 × 20) / (30 - 20)
s' = 600/10
s' = 60 cm

Tinggi nya tidak bisa dicari karena tidak ada keterangan mengenai tinggi benda atau bayangannya.
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2. s' = (h' × s) / h
s' = (18 × 48)/6
s' = 144 cm

f = (s' × s) / (s' + s)
f = (144 × 48) / (144 + 48)
f = 6.912/192
f = 36 cm

M = s'/s = 144/48 = 3 kali
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3. f = (s' × s) / (s' + s)
f = (15 × 10) / (15 + 10)
f = 150/25
f = 6 cm
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4. fokus = R:2 = 10 : 2
fokus = 5 cm

s' = (s × f) / (s - f)
s' = (30 × 5) / (30 - 5)
s' = 150/25
s' = 6 cm

M = s'/s = 6/30 = 0,2 kali

h' = M × h
h' = 0,2 × 10
h' = 2 cm