What is the intensity at 6 m from a 100 W bulb (2.5% efficient) if it is 0.022 W/m² at 3 m? - ELECTROMAGNETIC WAVES Quiz | GKFix.in

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Question

What is the intensity at 6 m from a 100 W bulb (2.5% efficient) if it is 0.022 W/m² at 3 m?

A. 0.022 W/m²
B. 0.011 W/m²
C. 0.0055 W/m²
D. 0.044 W/m²