What is the intensity of light at 3 m from a 100 W bulb with 2.5% efficiency? - ELECTROMAGNETIC WAVES Quiz | GKFix.in

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Question

What is the intensity of light at 3 m from a 100 W bulb with 2.5% efficiency?

A. 0.22 W/m²
B. 0.0022 W/m²
C. 0.022 W/m²
D. 2.2 W/m²

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