linamaringka
Saat benda 6 cm dari cermin: 1/6 + 1/12 = 1/f 2/12 + 1/12 = 1/f 3/12 = 1/f 1/4 = 1/f jadi f = 4 Saat benda digeser 1 cm menjauhi cermin maka jarak benda = 7 cm 1/7 + 1/s⁾ = 1/4 1/s⁾ = 7/28 - 4/28 = 3/28 jarak bayangan = 28/3 = 9,3 cm jawaban D
1/6 + 1/12 = 1/f
2/12 + 1/12 = 1/f
3/12 = 1/f
1/4 = 1/f jadi f = 4
Saat benda digeser 1 cm menjauhi cermin maka jarak benda = 7 cm
1/7 + 1/s⁾ = 1/4
1/s⁾ = 7/28 - 4/28 = 3/28
jarak bayangan = 28/3 = 9,3 cm jawaban D