Question

Could someone solve this please !!!!! I’m having my finals !! Please help !!! I will mark u as a brainlist !!!

Answer 1

Answer:

u= -20 cm   f= -30 cm

Step-by-step explanation:

Here v= 60 cm   m=3

m= -v/u

3= -60/u

u= -60/3

u=  -20

Now 1/f = 1/v + 1/u

1/f= 1/60 - 1/20

1/f= (1-3)/60

1/f = -2/60

1/f= -1/30

f=  -30 cm