so = 15 cm → 150 mm
si = -6 cm (Maya) → -60 mm
ho = 10 mm
Ditanya :
Jarak titik api dan tinggi bayangannya = ___?
Jawab :
Jarak titik apinya :
1/f = 1/so + 1/si
1/f = ¹/₁₅ - ¹/₆
1/f = ²/₃₀ - ⁵/₃₀
1/f = -³/₃₀
f = -10 cm
Tinggi bayangannya :
|si/so| = |hi/ho|
|-⁶⁰/₁₅₀| = |hi/10|
³/₅ = hi/10
5hi = 30
hi = 6 mm
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so = 15 cm → 150 mm
si = -6 cm (Maya) → -60 mm
ho = 10 mm
Ditanya :
Jarak titik api dan tinggi bayangannya = ___?
Jawab :
Jarak titik apinya :
1/f = 1/so + 1/si
1/f = ¹/₁₅ - ¹/₆
1/f = ²/₃₀ - ⁵/₃₀
1/f = -³/₃₀
f = -10 cm
Tinggi bayangannya :
|si/so| = |hi/ho|
|-⁶⁰/₁₅₀| = |hi/10|
³/₅ = hi/10
5hi = 30
hi = 6 mm