The aperture of a telescope partially or totally determines its
A) focal length and magnification.
B) light-gathering power.
C) focal length.
D) light-gathering power and magnification.
E) light-gathering power and diffraction limit.

Question

Quizplus · Accepted Answer

The aperture of a telescope determines its light-gathering power and diffraction limit, as a larger aperture allows more light to be collected and improves resolution.

The Aperture of a Telescope Partially or Totally Determines Its