Physics-
General
Easy
Question
A lamp emits monochromatic green light uniformly in all directions. The lamp is 3% efficient in converting electrical power to electromagnetic waves and consumes 100W of power. The amplitude of the electric field associated with the electromagnetic radiation at a distance of 10m from the lamp will be -
- 1.34 V/m
- 2.68 V/m
- 5.36V/m
- 9.37 V/m
The correct answer is: 1.34 V/m
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