The objectives of two astronomical telescopes have the same focal length but one objective has double the diameter of the other. An advantage of the telescope with the larger objective is
A)its higher power.
B)its greater aberration.
C)its higher price.
D)its brighter image.
E)its lower aberration.

Question

Quizplus · Accepted Answer

The telescope with the larger objective can gather more light, resulting in a brighter image.

The Objectives of Two Astronomical Telescopes Have the Same Focal