Explain why a convex mirror always produces a virtual and diminished image lying in between pole and the principal focus of the mirror?

Define principal focus of a mirror.

Define the principal focus of concave mirror.

When does a convex mirror produce a magnified image?

Which mirror always forms virtual, erect and smaller image?

Use the mirror equation to deduce that: a convex mirror always produces a virtual image independent of the location of the object.

An object placed 12 cm from the pole of a concave mirror produces a real image magnified four times.Find the radius of curvature of the mirror.