Question

focal length=20cm
object distance u=5cm
find image distance ​

Answer 1

Answer:

if it's mirror and it's a convex mirror

using mirror formula

1/v +1/u = 1/f

1/v = 1/f -1/u

1/v = 1/20 -1/-5

1/v = 1-4/20

1/v =-3/20

v = 20/-3

v = 6.66cm

hope it will help you

Answer 2

Step-by-step explanation:

pls tell which type of mirror or lens it is