In order to notice a different in light intensity from a 100 cd/m2 light, you need to increase the intensity by 5 cd/m2. According to Weber's Law, how much of an increase would be required to notice an increase from a 200 cd/m2 light? Question 46 Answer a. 5 cd/m2 b. 10 cd/m2 c. 20 cd/m2 d. 40 cd/m2