Q.

Regarding a monochromatic plane electromagnetic wave travelling in free space the true statement is

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a

electric and magnetic field have a phase difference of  π2

b

the energy contribution of both electric and magnetic fields are equal.

c

the direction of propagation is along the direction of BxE.

d

the pressure exerted by the wave is product of the speed and the energy density.

answer is B.

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Detailed Solution

The total energy carried by electromagnetic wave is equally shared by electric and magnetic field.
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