Final answer:
The imaginary line from your eyes to the focus point is termed the line of sight or, in optics, often referred to as the optical axis or principal axis. Therefore, the correct answer not mention.
Step-by-step explanation:
The imaginary line that extends from your eyes to the point of focus when looking at an object is known as the line of sight. However, if we are discussing ray diagrams in optics, which is likely given the context of mirrors and lenses, we might be referring to the line representing the path of light such as an optical axis or a principal axis in the case of lenses and mirrors.
Neither parallel, perpendicular, concave, nor convex perfectly describes this line, but it does relate closely to the concept of how light behaves in relation to such geometries in optical physics.
The imaginary line that extends from your eyes to the point of focus is called the principal axis. In the context of mirrors and lenses, the principal axis is the line passing through the center of the lens or mirror. It is an important reference line for understanding how light rays interact with optical devices such as mirrors and lenses.
Therefore, the correct answer not mention.