Question

Which mirror can give magnification of +1and why ?

Answer 1

Convex mirror can have magnification as +1

As + indicates the nature of mirror.

Answer 2

Magnification = height of the image / height of the object = distance of the image / distance of the object

The magnification produced by a plane mirror is +1 means then the size of the image is equal to the size of the object.

sign indicates that the image is erect.

.-. Magnification ’ + 1’ indicates the image is erect and size of the image is equal to size of the object.