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

Define magnification produced by a lens.

Define magnification produced by a spherical mirror.

The magnification produced by a mirror is -2. The image is virtual, erect and enlarged .

What is the magnification of plane mirror ?

What is the nature of the image formed by a concave mirror if the magnification produced by the mirror is + 3?

An image magnified 2/3 times is produced by a convex mirror of focal length 20 cm. Find the object distance.

The angle between an incident ray and the mirror is 40°. what is the angle of reflection?

The relative density of mercury is 13.6. What does this statement mean?