The size of the device that collects radiation (such as light) is called a telescope's:
A) magnification
B) resolution
C) aperture
D) focal width
E) Galilean criterion

Question

Quizplus · Accepted Answer

The aperture is the size of the device that collects radiation, typically light. A larger aperture allows for more light to enter the telescope, resulting in a brighter and clearer image. Magnification is the degree to which an object is magnified by a telescope, resolution refers to the ability to distinguish fine details in an image, focal width is not a commonly used term in relation to telescopes, and Galilean criterion is not relevant to the size of a telescope.

The Size of the Device That Collects Radiation (Such as Light)