asked 108k views
4 votes
the illuminance on a surface is 6 lux and the surface is 4 meters from the light source. What is the intensity of the saurce?

1 Answer

1 vote
L = illuminance
A = surface
i = intensity

L = i / A ==: i = L * A

i = 6 lux * 4 m^2 = 24 lumen
answered
User Saitho
by
8.3k points
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