Question

an object is placed at a distance of 20cm in front of a convex mirror with focal length 20cm. it's image distance is.... ​

Answer 1

Answer:

10cm

Explanation:

f = 20 cm

u = -20cm

1/v+1/u = 1/f

1/v  = 1/20 +1/20

      = 2/20

     = 1/10

v     = 10 cm

Answer 2

Answer:

equal to 10 option (C) is the right answer

Explanation:

it's a Brainlist answer thank u........