ketinggian benda 5 cm, jarak dari cermin 29 cm, jari jari cermin 48 cm. berapa jarak bayangan yang terbentuk?

dik : h = 5cm, s = 29cm, r = 48cm. dit : s' ?
jb. r = 2f
48 = 2f
f = 48/2
f = 24cm
1/f = 1/s + 1/s'
1/24 = 1/29 + 1/s'
1/s' = 1/24 + 1/29
1/s' = 13,13cm