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1/si + 1/so = 1/f
1/si + 1/10 = 1/15
1/10 - 1/15 = 1/si
3/30 - 2/30 = 1/si
1/30 = 1/si
si = 30 cm
2.
M = si/so
= 30/10
= 3 kali
3.
hi = M x ho
= 3 x 2
= 6 cm
4.
a. maya
b. tegak
c. semakin jauh benad dari cermin bayangan semakin besar dan semakin jauh
semoga membantu, maaf jika ada kesalahan :D