Final answer:
The intersection of a plane and a ray can be a point, as is the case in optics where ray tracing is used to locate the point where light rays converge to form an image on a plane, such as on a screen or a detector.
Step-by-step explanation:
True, the intersection of a plane and a ray can indeed be a point. A ray is a straight line that originates at a point and extends indefinitely in one direction. When a ray intersects a plane, the possible outcomes for the intersection are typically a point or no intersection at all (if the ray is parallel to the plane and doesn't lie on it). In optical systems, for example, the ray model of light is used to describe the path of light as straight lines. When dealing with lenses, ray tracing techniques help determine where the light rays converge after passing through a lens to form an image. By drawing any two principal rays, one can locate the image of a point where these rays intersect, which is usually on a plane representing the image space such as a projection screen or a detector like the retina in an eye. Therefore, it is accurate to state that a ray can intersect with a plane at a single point, under the right conditions.