Question

describe how light reflecting from a mirror can produce an image. In particular, explain how mirrors can produce images that are larger or smaller than life size, as well as upright or inverted.

A larger image is produced when   >

A smaller image is produced when <

An upright image  is produced when m is positive

An upright image  is produced when m is negative

Explanation:

The mirror equation is given as follows;

For concave mirrors, f = focal length

= Image distance from the mirror (-ve = Image is behind the mirror +ve = Image is in front of the mirror)

= Object distance from the mirror (-ve = Object is behind the mirror +ve = Object is in front of the mirror)

m = Magnification (-ve m = Inverted image +ve m = upright image)

= Image height

= Object height

f = Focal length of the mirror

To produce a larger image >

To produce a smaller image <

To produce an upright image, m should be positive hence, will be negative or the image will appear behind the mirror

To produce an inverted image, m should be negative hence, will be positive or the image will form in front of the mirror.