Question

Tolong jawab pakai cara ya.. Yg jawab saya doain masuk surga.. amin

Answer 1

10.1/f=1/Sι + 1/S₀
1/f=1/40+1/20
1/f=3/40
f=13.3 

11.perbesaran = Sι/S°
Sι= S°xf/S°-f
Sι= 20 x 15 / 20-15
Sι= 60

M=60/20
M=3               
semoga bermanfaat