To demonstrate Emmert's law you need a retinal image that its size and a projected surface that its size.
A)changes;does not change
B)does not change;changes
C)does not change;does not change

Question

Quizplus · Accepted Answer

Emmert's law states that the perceived size of an afterimage changes in direct proportion to the distance of the projection surface; thus, the retinal image size remains constant while the size of the projected surface (or the distance to it) changes, affecting the perceived size of the image.

To Demonstrate Emmert's Law You Need a Retinal Image That