the energy intensity of radiation coming from 100 W bulb at a distance 3 m from the bulb E. the energy intensity of the radiation coming from 50 W bulb at same distance
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Answer & Explanation:
The radiation energy intensity (is the physical law) is directly proportional to the square of the distance from source to physical quantity (3m away).
When the bulb is switched from 100W to 50W at 3m distance,
Therefore, the distance is kept the same, the radiation intensity will only become half, due to reduction of power at the source by half at the point 3m away.
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