Perkalian (×)
Pembagian (÷)
Jari2 Kelengkungan (R)
Fokus (F)
Jarak bayangan (Si)
Perbesaran bayangan (M)
F = R ÷ 2
= 30cm ÷ 2
= 15cm
Si = So × F ÷ So - F
= 30 × 15 ÷ 30 - 15
= 450 ÷ 15
= 30cm
M = Si ÷ So
= 30 ÷ 30
= 1 kali
Tinggi Bayangan = So × M
= 30 × 1
Sifat Bayangan cermin cembung selalu : Maya, Tegak, diperkecil
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Lambang
Perkalian (×)
Pembagian (÷)
Jari2 Kelengkungan (R)
Fokus (F)
Jarak bayangan (Si)
Perbesaran bayangan (M)
F = R ÷ 2
= 30cm ÷ 2
= 15cm
Si = So × F ÷ So - F
= 30 × 15 ÷ 30 - 15
= 450 ÷ 15
= 30cm
M = Si ÷ So
= 30 ÷ 30
= 1 kali
Tinggi Bayangan = So × M
= 30 × 1
= 30cm
Sifat Bayangan cermin cembung selalu : Maya, Tegak, diperkecil