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03-03-2019
Physics

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The illuminance on a surface is 3.5 lux, and the surface is 2 meters from the light source. What’s the intensity of the source?

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wiseowl2018 wiseowl2018

03-03-2019

Answer:

The intensity is 49 Candelabra

Explanation:

The formula for calculation the luminous intensity is;

Luminous intensity = illuminance × square radius

Lv = Ev × r²

= 3.5 × 2²

= 3.5 × 14

= 49 Candelabra

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