Which of the following mirror has the highest field of view?
As shown in the diagram we can see:
Convex mirror has the highest field of view as it has bulged shape on its reflecting side.
Plane mirror is straight and that is why it has only the view of light rays coming parallel to it.
Concave mirror and parabolic concave mirror have depressions on their reflecting side, that is why they have the least field of view.