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s = 8 cm
f = 24 cm
ditanyakan :
s'=?
M = ?
h = ?
jawab :
1/f = 1/s + 1/s'
1/24 = 1/8 + 1/s'
1/24 - 1/8 = 1/s'
1/s' = 1/24-3/24 = -2/24
s' = -12 cm
M = -s'/s
M = -(-12)/8 = 1,5 kali
h' = M x h
h' = 1,5x 5 = 7,5 cm