Bayangannya adalah...

-1/so + 1/si = 1/f
-1/4 + 1/si = 1/60
1/si = 1/60 + 1/4
1/si = 1/60 + 15/60
1/si = 16/60
1/si = 4/15
si = 15/4
si = 3,75cm

Semoga membantu :)
^(723²¹)^ Salam GCX

h = 8 cm
s = 4 cm
f = -60 cm
s' = ___?

s' = sf / (s - f)
   = 4 cm . -60 cm / (4 cm + 60 cm)
   = -240 cm / 64 cm
   = -3,75 cm

M = -s'/s
    = 3,75 cm/4 cm
    = 0,9375 kali

h' = Mh
    = 0,9375 . 8 cm
    = 7,5 cm