electromagnetic waves

dreamer8987 | 17:38 Thu 02nd Apr 2009 | Science

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the amplitude of the electric field component of and electromagnetic wave is increased from E to 4E. What is the corresponding change in the intensity of the wave?
a) the intensity is unchanged by the increase in E
b)the intensity increases by a factor of 16
c) the intensity increases by a factor of 4
d)the intensity decreases by a factor of 4
e)the intensity decreases by a factor of 16

electromagnetic waves

electromagnetic waves

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