Question

What is the nature of image formed by a concave mirror if the magnification produced by the mirror (a) +4, and (b) −2?

Answer 1

(a) The image formed by a concave mirror, with a magnification of +4, is virtual and erect. This is because, the height of both the object and the image is above the principal axis.
(b)The image formed by a concave mirror, with a magnification of -2, is real and inverted.This is because, the height of the object is above the principal axis and that of the image, below it.