Question

(a) Draw a labelled ray diagram to show the formation of image in a convex-mirror when the object is at infinity. Mark clearly the pole and focus of the mirror in the diagram.
(b) State three characteristics of the image formed in this case.
(c) Draw diagram to show how a convex mirror can be used to give a large field of view.

Answer 1

(a)

(b) Image formed by a convex mirror is always

1) virtual
2) erect, and

3) diminished, i.e. smaller than the object

(c) The following ray diagram shows that a convex mirror can be used to produce a large field of view. This is because when an object is in front of the convex mirror, irrespective of its distance (other than infinity), a virtual, erect and diminished image of the former is obtained. So, a convex mirror can produce image of a large number of objects at the same time.