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abigailgraceyoung abigailgraceyoung
  • 08-03-2016
  • Physics
Answered

If a 72-candela light source is located at a distance of 3 meters from a surface, the illuminance on the surface is

A. 216 lux.   B. 8 lux.   C. 24 lux.   D. 648 lux

Verified Answer :

Anonymous Anonymous
  • 18-03-2016

If a 72-candela light source is located at a distance of 3 meters from a surface, the illuminance on the surface is _____.

The formula of illuminance is equal to:
Illuminance = distance light
Illuminance = 3 72
Illuminance = 216 lux.

So the correct answer is letter (A) 216 lux.

Answer Link

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