KEAM 2014 Physics and Chemistry Paper

Question : 14 of 120

Marks: +1, -0

Which one of the following is the property of a monochromatic, plane electromagneticwave in free space?

Electric and magnetic fields have a phase difference of π/2
The energy contribution of both electric and magnetic fields are equal
The direction of propagation is in the direction of electric filed E
The pressure exerted by the wave is the product of energy density and the speed of the wave
The speed of the wave is B/E

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