Jarak bayangan dan sifat bayangan yg terjadi adalah...

f = 15 cm
s = 20 cm

1/f = 1/s + 1/s'
1/s' = 1/f - 1/s
1/s' = 1/15 - 1/20
1/s' = 4/60 - 3/60
1/s' = 1/60
s' = 60
Jarak banyangan = 60 cm



m = s/s'
= 60/20
= 3

Sifat bayangan = nyata, terbalik, diperbesar