The amplitude of the electric field component of anelectromagnetic wave is incre

Question

The amplitude of the electric field component of anelectromagnetic wave is increased from E to 4E.What is the corresponding change in the intensity of thewave?

a. The intensity increases by a factor ofsixteen.
b. The intensity decreases by a factor ofsixteen.
c. The intensity increases by a factor offour.
d. The intensity decreases by a factor offour.
e. The intensity is unchanged by the increase inE. The amplitude of the electric field component of anelectromagnetic wave is increased from E to 4E.What is the corresponding change in the intensity of thewave? The intensity increases by a factor ofsixteen. The intensity decreases by a factor ofsixteen. The intensity increases by a factor offour. The intensity decreases by a factor offour. The intensity is unchanged by the increase inE.

Explanation / Answer

Intensity increases by a factor of sixteen Since intensity is directly proportional to its amplitude ofelectric field

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