Question

An object of length 5cm is placed at a distance 1m from concave mirror . if radius of curvature if mirror is 20cm. size of image will be

Answer 1

u=1m=100cm

C=20cm

f=10cm

by mirror formula ,

1/v+1/u=1/f

1/v=1/10-1/100

v=100/9

as we know that

-v/u=h'/h=m

-1/9=h'/5

h'=-5/9

Answer 2

Hope it helps u... :)