If the just-noticeable difference for a 10-ounce weight is 1 ounce,the just noticeable difference for an 80-ounce weight would be ________ ounces.
A) 2
B) 4
C) 8
D) 10

Question

Quizplus · Accepted Answer

Weber's Law states that the just-noticeable difference is a constant proportion of the original stimulus. This proportion is often referred to as the Weber fraction. The Weber fraction for a 10-ounce weight is 1/10 or 0.1. Therefore, to determine the just-noticeable difference for an 80-ounce weight, we would multiply 80 by the Weber fraction of 0.1. 80 x 0.1 = 8, so the just-noticeable difference for an 80-ounce weight would be 8 ounces. Therefore, the best choice would be C) 8.

If the Just-Noticeable Difference for a 10-Ounce Weight Is 1