What characteristic of a telescope controls the amount of light captured by the telescope?
A) resolving power
B) magnifying power
C) size of eyepiece
D) number of mirrors
E) diameter of tube

Question

Quizplus · Accepted Answer

The diameter of the tube, or more specifically, the diameter of the primary mirror or lens (aperture), controls the amount of light captured by the telescope. A larger aperture allows more light to enter, improving the telescope's ability to observe faint objects.

What Characteristic of a Telescope Controls the Amount of Light