Linear magnification of plane mirror is

Define magnification of spherical mirror. What is the magnification produced in a plane mirror?

What is meant by linear magnification of a spherical mirror? Derive expressions for it.

The magnification produced by plane mirror is +1. What does this mean?

What is magnification?

Image formed by a plane mirror is

mention any two applications of a plane mirror.

A film projector magnifies a 100 cm^2 film strip on a screen.If the linear magnification is 4,the area of the magnified film on teh screen is