Optics
A convex mirror is used
The passenger side-view mirror on an automobile often has notation. "Objects seen in mirror are closer than they appear". Is the image really farther away than the object?
As side-view mirrors are made up of Convex mirrors and they form smaller image and they make images far away than the object. That's why image is smaller and closer than the object.
Hence, option 'D' is correct.
A convex mirror is used