When two walking figures move across your field of view, one twice as far as the other, the image of the farther walker will:
A) Move at twice retinal velocity of the nearer walker
B) Move at the same retinal velocity as that of the nearer walker
C) Move at half retinal velocity of the nearer walker
D) Will appear to be stationary on the retina.

Question

Quizplus · Accepted Answer

The retinal velocity of an object is inversely proportional to its distance from the observer. Therefore, if one walker is twice as far away as the other, its image will move at half the retinal velocity of the nearer walker.

When Two Walking Figures Move Across Your Field of View