Final answer:
A lens that creates an upright virtual image signifies a positive magnification, sometimes greater than one, indicating that the image is larger than the object. The image distance is negative, confirming that the image is virtual and appears on the same side of the lens as the object, as in the case of a magnifying glass.
Step-by-step explanation:
When a lens produces a virtual image that is upright relative to the object, it indicates certain characteristics about the lens and the image formed. Specifically, one can infer that the magnification of the image has a positive value, which signifies that the image is upright in comparison to the object. In some cases, observed through a convex lens, the magnification can also be greater than 1, meaning the virtual image is larger than the actual object.
Moreover, the image distance being negative implies that the image is on the same side of the lens as the object, identifying it as a virtual image, which is non-projectable. For example, when an object is closer to a convex lens than its focal length, light rays after passing through the lens appear to diverge and seem to originate from a point where the virtual image is located. This phenomenon is beneficial in devices like magnifying glasses, which create an enlarged virtual image to aid in viewing small details.