Final answer:
Rays directed towards the far focal point of a diverging lens emerge traveling parallel to the lens axis. This is due to the refractive properties and shape of the diverging lens, which causes parallel light rays to diverge as if originating from the focal point with a negative focal length.
Step-by-step explanation:
For a diverging lens, rays that enter the lens directed along lines toward the far focal point emerge from the lens traveling parallel to the lens axis. This behavior is explained by the way a diverging lens bends light. When a ray of light enters a diverging lens (also known as a concave lens) parallel to its axis, it is refracted and diverges in such a way that it appears to originate from the focal point on the same side of the lens as the incoming ray. This focal point is denoted as F and has a negative focal length (f) in the case of a diverging lens. Conversely, a ray that is directed towards the focal point on the opposite side of a diverging lens will exit the lens parallel to the axis, based on the optical principles of refraction and the lens's shape.
The optical effect of a diverging lens, such as a concave lens, is to spread out light rays that are initially parallel to the lens axis, making them seem to emanate from a common point (the focal point F) and thus defining the negative focal length associated with such lenses.