Question

Mintak tolong di jawab dengan caranya

Answer 1

S = 10 cm
f = 15 cm
M = .............?

Penyelesaian :
1/S + 1/S' = 1/f
1/10 + 1/S' = 1/15
1/S' = 1/15 - 110
1/S' = (2 - 3) / 30
1/S' = -1/30
S' = 30/-1
S' = -30 cm 
S' = 30 cm di belakang cermin (sifat bayangan maya)

M = I S'/S I
M = I -30/10 I
M = 3 kali

Jadi, perbesaran benda adalah 3 kali (Jawaban D)