Jawabanmu

2014-05-08T13:40:18+07:00
1/f = 1/ s benda+1/s bayangan
-1/7,5=1/15 + 1/s bayangan
1/s bayangan= -1/7,5 - 1/15
1/s bayangan= -2/15 - 1/15
1/s bayangan= -3/15
s bayangan= -5 cm ( - menandakan bayangan maya)

M = s bayangan / s benda
M = 5 / 15
M = 1/3 kali

M = h bayangan / h benda
1/3 = h bayangan / 3
h bayangan = 1/3 x 3
h bayangan = 1 cm