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Question

The time varying electric and magentic fields are E=Ex^i+Ex^j+Ez^k and B=Bx^i+By^j+Bz^k respectively. They generate a plane electromagnetic wave travelling towards x-direction in pair of space.

A
Ey,Bz
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B
Ex,By
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C
Ez,Bx
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D
Ez,Bz
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Solution

The correct option is D Ey,Bz
As the electromagnetic wave is travelling towards x-direction, so the electric and magnetic fields will oscillate perpendicular to x-axis. Also, EB, so if B is towards y-direction B must be towards z-direction. i.e., Ey,Bz.

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