An individual's eye pupil changes from a diameter of 3.5 mm to 1.4 mm as the illumination is increased.By what factor does the minimum angle of resolution change?
A)0.5
B)0.71
C)2.2
D)2.5
E)4.9

Question

An individual's eye pupil changes from a diameter of 3.5 mm to 1.4 mm as the illumination is increased.By what factor does the minimum angle of resolution change?
A)0.5
B)0.71
C)2.2
D)2.5
E)​4.9

Quizplus · Accepted Answer

The minimum angle of resolution is inversely proportional to the diameter of the pupil. When the diameter decreases from 3.5 mm to 1.4 mm, the factor by which the minimum angle of resolution changes is 3.5/1.4 = 2.5.

An Individual's Eye Pupil Changes from a Diameter of 3