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Questions  

An electromagnetic wave in vacuum has the electric and magnetic field E  and  B,   which are always perpendicular to each other . The direction of polarization  is given by i^  and that of wave propagation by k^ . Then direction of magnetic field is

a
-i^
b
j^
c
-k^
d
-j^

detailed solution

Correct option is B

B^=c^×E^ ⇒B^=k^×i^=j^

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