The pupil of a person's eye changes from a diameter of 3.5 mm to 1.5 mm as the illumination is increased.By what factor does the minimum angle of resolution change?
A)0.43
B)0.65
C)2.0
D)2.3

Question

Quizplus · Accepted Answer

The minimum angle of resolution is inversely proportional to the diameter of the pupil. Therefore, when the pupil diameter decreases from 3.5 mm to 1.5 mm, the minimum angle of resolution increases by a factor of 3.5/1.5 = 2.3.

The Pupil of a Person's Eye Changes from a Diameter