Question

A desk is 3.35 m below an 1850-lm incandescent lamp. What is the illumination on the desktop?

Answer 1

`E = "13.1181396623 lx"`

Explanation:

`E = P/(4pir^2)`

Where P is luminous flux
r is the distance between distance between the luminous object and the object

`E = (1850lm)/(4pi(3.35m)^2`

`E = "13.1181396623 lx"`