In general,doubling the diameter of an optical telescope will:
A) quadruple the light-gathering power and double the angular resolution.
B) quadruple the light-gathering power and quadruple the angular resolution.
C) double both the light-gathering power and the angular resolution.
D) double the light-gathering power and quadruple the angular resolution.

Question

Quizplus · Accepted Answer

Doubling the diameter of a telescope increases the light-gathering power by a factor of four (since it depends on the area, which is proportional to the square of the diameter) and doubles the angular resolution (since resolution is inversely proportional to the diameter).

In General,doubling the Diameter of an Optical Telescope Will