Question

Tolong jelasin caranya donk kk...
Aku gak ngerti ni cara nyarinya no. 18 ya....

Answer 1

jarak benda = 6 cm

jarak bayangan = 24 cm

berarti jarak fokusnya

1/f = 1/s + 1/s'

1/f = 1/6 + 1/24

1/f = (4+1)/24

1/f = 5/24

f = 24/5 = 4,8 cm

benda digeser 6 cm menjauhi cermin, berarti jarak bendanya = 6 + 6 = 12 cm

jarak bayangannya jadi

1/s'= 1/f - 1/s

1/s'= 1/4,8 - 1/12

1/s' = 10/48 - 4/48

1/s' = 6/48

s' = 48/6 = 8

jarak bayangannya = 8 cm

udah jelas.. sifat bayangannya nyata, terbalik, diperkecil