Diketahui
f = 12 cm
M = 4 kali
Ditanya : Letak benda (s)
Jawab
M = s'/s
4 = s'/s
s' = 4s
1/f = 1/s' + 1/s
1/12 = 1/4s + 1/s
1/12 = 1/4s + 4/4s
1/12 = 5/4s
s = 12 x 5 / 4
s = 15 cm
Jadi letak benda adlah 15 cm dari cermin
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Diketahui
f = 12 cm
M = 4 kali
Ditanya : Letak benda (s)
Jawab
M = s'/s
4 = s'/s
s' = 4s
1/f = 1/s' + 1/s
1/12 = 1/4s + 1/s
1/12 = 1/4s + 4/4s
1/12 = 5/4s
s = 12 x 5 / 4
s = 15 cm
Jadi letak benda adlah 15 cm dari cermin