MCQOPTIONS
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| 1. |
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 |
| A. | 1.34 V/m |
| B. | 2.68 V/m |
| C. | 5.36 V/m |
| D. | 9.37 V/m |
| Answer» B. 2.68 V/m | |