Penjelasan:
1/s' = 1/f - 1/s
1/s' = 1/15 - 1/55
1/s' = 11/165 - 3/165
1/s' = 8/165
s' = 165/8
M = |s'/s|
M = 165/8 ÷ 55
M = 165/8 × 1/55
M = 165/440
M = 3/8 kali
opsi c
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Penjelasan:
1/s' = 1/f - 1/s
1/s' = 1/15 - 1/55
1/s' = 11/165 - 3/165
1/s' = 8/165
s' = 165/8
M = |s'/s|
M = 165/8 ÷ 55
M = 165/8 × 1/55
M = 165/440
M = 3/8 kali
opsi c