(a)

(i) Copy and complete the ray diagram to show the formation of the image of the object AB
(ii) Name the lens LL'.
(iii) Name a device in which this principle is used.

(i)*  the point B which touches the lens will relflect back and pass through A (imaginery line)
* and the line which touches X from the lens will go straight towards above B (imaginery line)
and join both imaginery lines by using a line through X in the left side