Question

Tolong tuliskan juga cara nya

Answer 1

Lensa cembung fokus positif









s' (bayangan) = 60 cm

perbesaran s'/s = 60/20 = 3x

jadikan jawaban terbaik ya

Answer 2

Diket : f = 15
          s = 20
Ingat rumusnya ya..
1/f = 1/s + 1/s'
1/15 = 1/20 + 1/s'
1/15 - 1/20 = 1/s'
(4 - 3)/60 = 1/s'
1/60 = 1/s'
s' = 60

Perbesaran :
s'/s
= 60 / 20 
= 3x