A plane electromagnectic wave propagatin...

A plane electromagnectic wave propagating along x-direction can have the following pairs of `E` and `B`.

`E_x , B_y`

`E_y , B_z`

`B_x , E_y`

`E_z , B_x`

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The correct Answer is:

In an electromagnetic wave `vecE and vecB` are perpendicular to each other and also perpendicular to the direction of propagation.
`:. ` In a electromagnetic wave propagating along x-direction a possible pair is `E_y ,B_z`.

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