The rear view mirror used in vehicles is?

The correct answer is Convex mirror. Rear-view mirrors in vehicles utilize convex mirrors because they always form a virtual, erect, and diminished image of objects. This characteristic provides a wider field of view, allowing the driver to see a larger area behind the vehicle, which is crucial for safe driving.

• Parabolic mirrors are used for focusing light, like in headlights or telescopes, not for general viewing.
• Plane mirrors produce images of the same size as the object, offering a very limited field of view.
• Concave mirrors produce magnified images, which would distort perception and reduce the field of view, making them unsuitable for rear-view applications.