Answer:
The constant 2.2 in L(D) represent the brightness in lumens per square inch.
Step-by-step explanation:
Given : The intensity of a light in lumens is the product of the brightness in lumens per square inch and the surface area of the sphere with a radius equal to the distance to the source in inches the function [tex]L(D)=2.2(4D^2)[/tex] can be used to represent a particular lights intensity.
To find : What does the constant 2.2 in L(D) represent ?
Solution :
The intensity of a light in lumens is the product of the brightness in lumens per square inch and the surface area of the sphere with a radius equal to the distance to the source in inches.
The function given is [tex]L(D)=2.2(4D^2)[/tex] is the product of two terms,
[tex]L(D)=2.2\times (4D^2)[/tex]
On comparing with statement,
The intensity of a light in lumens is L(D).
The brightness in lumens per square inch is 2.2.
The surface area of the sphere with a radius equal to the distance to the source in inches is [tex]4D^2[/tex]
Therefore, the constant 2.2 in L(D) represent the brightness in lumens per square inch.
Answer:
The other answer was correct, it is C, the brightness on e2020.
Step-by-step explanation:
