In case of plane mirror, the size of the image is equal to the size of the object, irrespective of the distance of the object from the mirror.
An object of size 2.0 cm is placed perpendicular to the principal axis of a concave mirror. The distance of the object from the mirror equals the radius of curvature. The size of the image will be-
At what distance from a concave mirror of focal length 25 cm should an object be placed so that the size of image is equal to size of the object.