The diffraction limit of a 4-m telescope is __________ than that of a 2-m telescope.
A) 2 times larger
B) 4 times larger
C) 2 times smaller
D) 4 times smaller

Question

Quizplus · Accepted Answer

The diffraction limit is proportional to the diameter of the telescope. Therefore, the diffraction limit of a 4-m telescope is (2/4)^-1 = 0.5 times that of a 2-m telescope. This means that the diffraction limit of a 4-m telescope is 2 times smaller than that of a 2-m telescope.

The Diffraction Limit of a 4-M Telescope Is __________ Than