Question

(1) An object is placed in front of convex mirror of 20 cm radius of curvature .Its image is formed 8 cm behind the mirror . Find the distance of the object from the mirror . .​

Answer 1

Answer:

the object from the mirror is

Explanation:

contained 20×2

Answer 2

Answer:40cm in front of the mirror

Explanation:f=r/2

f=20/2=10

v=8cm

By formula,

1/v+1/u=1/f

1/8+1/u=1/10

1/8-1/10=-1/u

1/40=-1/u

u=-40cm