The word 'AMBULANCE' written on an ambulance reads correctly when reflected in a rear view mirror whereas the number plate does not. Why?
'AMBULANCE' is written laterally inverted.
When an object is placed in front of a plane mirror, then the right side of an object appears to become the left side of the image; and the left side of the object appears to become the right side of the image. This change of sides of an ‘object’ and its ‘mirror image’ is called a lateral inversion. The word 'AMBULANCE' on an ambulance is written in mirror writing. Hence, when it is reflected, it reads correctly whereas number plate does not.