Which type of mirror is usually used as a rear-view mirror in motor cars ?

State whether the following statement is true or false: A converging mirror is not used as a rear-view mirror.

What type of mirror could be used:

(a) as a shaving mirror?

(b) as a shop security mirror?

What kind of mirrors are used in shopping centres to watch the activities of the customers?

A ray of light going towards the of a convex mirror becomes parallel to the principal axis after reflection from the mirror. Draw a labelled diagram to represent this situation.