Find the focal length of a convex spherical mirror which produces an image 1/6th the size of an object located 0.12 m from the mirror.
u=-0.12m=-12 cm , v=-0.2m=-20cm
1f=1v+1u
1f=-120-112
1f=-3-560 =-860=-215 ,f =-152 =-7.5m =-0.075m
What are you looking for?