Physics, 11.10.2021 05:30, sethlynn2003

A light bulb has an illuminance of 19.9 lx at a distance of 2 m . What is the luminous flux of the bulb? Note: E=P/4πr^2

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A light bulb has an illuminance of 19.9 lx at a distance of 2 m . What is the luminous flux of the b...