Question

Ada yang bisa jawab? kalo bisa sama rumus nya.​

Answer 1

f = 10 cm

s = 15 cm

s' = ?

1/f = 1/s + 1/s'

1/ 10=1 /15+1/s'

1/10-1/15=1/s'

3/30-2/30= 1/s'

1/30=1/s'

1×s'=30×1

s'=30

Maaf kalo salah: )