MCQ Solution: Electromagnetic Waves
A 60W light bulb emits spherical electromagnetic waves uniformly in all directions. If 50 percent of the power input to such a light bulb is emitted as electromagnetic radiation, what is the radiation intensity at a distance of 2:00 m from the light bulb?
1) 4:8W/m2
2) 1:2W/m2
3) 2:4W/m2
4) 0.6W/m2
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