Final answer:
True, light in a work of art can be actual or implied, with artists using value to craft illusions of light in two-dimensional works or using external sources for three-dimensional sculptures and theatrical productions.
Step-by-step explanation:
"Light" in a work of art can indeed be actual or implied. When artists create a two-dimensional piece, such as a painting or drawing, they have the ability to craft the illusion of light within the work. This use of light is considered implied, as the artist manipulates value (the range of lights and darks) to give the appearance of brightness and shadow. On the other hand, actual light is external and is used in three-dimensional works like sculptures, where the light source is separate from the artwork itself. Moreover, in stage productions and lighting design, whether the light is hidden or visible to the audience can serve as cues to the level of realism the designers aim to convey. They may also choose to obscure the light source for effects, creating an atmosphere distinct from 'real' light, especially when not bound by realistic constraints.