2015 · Q45
The outside rearview mirror of modern automobiles is marked with warning "objects in mirror are closer than they appear". Such mirrors are
General KnowledgePhysics
- Aplane mirrors
- Bconcave mirrors with very large focal lengths
- Cconcave mirrors with very small focal lengths
- Dconvex mirrors
Explanation
Modern rearview mirrors are convex: the outward-curving surface gives a wider field of view but produces a diminished image, making objects look smaller and farther away than they really are — hence the printed warning. Plane mirrors give true-size images and concave mirrors magnify, so neither carries that warning. Hence D.