1.

An `EM` wave is propagating in a medium whith a velocity `vecv=vhati`. The instantaneous oscillating electric field of this of em wave is along `+y` axis. Then the direction of oscillating magnetic field of the `EM` wave will be alongA. `-y` directionB. `+z` directionC. `-z` directionD. `-x` direction

Answer» Correct Answer - B
`vec E xx vecB=vecV`
`(Ehat j)xxvec (B)=V hat i`
So,` vecB=Bhat K`
Direction of propagation is along +z direction.


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