Question

Differentiate between the principal focus of concave and convex mirrors?

Answer 1

Focus of the concave mirror.

1. Position: It lies in front of the mirror.
2. Nature: It is a real focus because the light rays after reflection from a concave mirror converge at the principal focus.

Focus of the convex mirror.

1. Position: It lies behind the mirror.
2. Nature: It is a virtual focus because the light rays after reflection from a convex mirror appear to come from the principal focus.