The relation between the linear magification `m`, the object distance `u` and the focal length `f` is

Answer the following Obtaine the relation between magnification (M), produced by spherical mirror in terms of focal length of mirror (f) when an object is placed at distance u formaing an image at distance v.

The distance between the object and the real image formed by a convex lens is d. If the linear magnification is m, find the focal length of the lens in terms of d and m.

Answer the following State the relationship between object distance (u), image distance (v) and focal length (f) of a spherical mirror. What is this relationship known as?