Final answer:
In a convex mirror with a focal length of -63 cm, an object placed 39 cm away results in a virtual, upright, and reduced image since convex mirrors always produce such images irrespective of object distance. Option C,D are correct.
Step-by-step explanation:
For a convex mirror with a focal length of -63 cm and an object located 39 cm from the surface of the mirror, the characteristics of the image formed can be determined. A convex mirror always forms images that are virtual, upright, and reduced in size compared to the object.
Convex mirrors diverge light rays, so the reflected rays appear to come from a point behind the mirror (virtual focus), leading to a virtual image. Additionally, because the reflected rays never actually converge, the image cannot be projected onto a screen, confirming it is virtual.
The upright characteristic of the image means that if the object is oriented in an upright position, the image will also appear upright, rather than being inverted as it would be with a real image. Given that convex mirrors reduce the size of the images, the magnification is less than one.