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Physics 9 Online
OpenStudy (anonymous):

The illuminance due to a 60-W lightbulb at 3 m is 9.35 lx. Total luminous flux of the bulb? `8.3x10^22 lm `7.4x10^21 lm `1.2x10^2 lm `1.1x10^3 lm ? Thanks for any help!(:

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