What statement below best describes the behavior of light encountering the objective lens of a refracting telescope?
A) All light is absorbed as it travels though a dense, transparent material.
B) White light from astronomical objects is emitted by the lens.
C) Light rays are focused to form an image after they pass through the lens which is of different optical density.
D) Light rays are focused to form an image after they reflect off the lens.

Question

Quizplus · Accepted Answer

When light passes through the objective lens of a refracting telescope, the lens refracts (bends) the light rays and focuses them to form an image. The lens is made of a material with a different optical density than the surrounding air, so the speed and direction of the light rays change as they pass through the lens. This bending of the light rays allows for the formation of an image at the eyepiece of the telescope.

What Statement Below Best Describes the Behavior of Light Encountering