An electromagnetic wave travelling along z-axis is given as-E=E0 cos (kz – cot). Choose the incorrect option from the following;

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Q. An electromagnetic wave travelling along z-axis is given as-E=E0 cos (kz – cot). Choose the incorrect option from the following;

(A) The associated magnetic field is given as B = \(\frac{1}{c}\)\(\hat{k}\) × E = \(\frac{1}{\omega}\)(\(\hat{k}\) × E)
(B) The electromagnetic field can be written in terms of the associated magnetic field as E = c(B × \(\hat{k}\))
(C) \(\hat{k}\).E = 0, \(\hat{k}\).B =0
(D) \(\hat{k}\) × E = 0, k\(\hat{k}\) × B = 0

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✅ Correct Answer: (D) \(\hat{k}\) × E = 0, k\(\hat{k}\) × B = 0

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