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An electromagnetic wave going through vacuum is described by E = Eo sin(kx – ωt).

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An electromagnetic wave going through vacuum is described by E = Eo sin(kx – ωt). Which of the following is independent of the wavelength?

 (A) ω    (B) (k / ω)  (C) kω  (D) k

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Best answer

The correct option is (B) (k / ω).

Explanation:

E = Eo sin(kx – ωt)

Here k = (ω/c) hence (k/ω) = (ω/c) × (1/ω) = (1/c

hence (k/ω) is independent of wavelength.

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