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Question

An electromagnetic wave is represented by the electric field E=E0^n sin[ωt+(6y8z)] Taking unit vectors in x y and z directions to be ^i,^j,^k, the direction of propogation ^s is given by:

A
^s=4^k+3^j5
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B
^s=2^j3^k5
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C
^s=(3^j+4^k5)
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D
^s=3^i4^j5
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