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14 August, 22:39

A 6.53!1014 Hz electromagnetic wave propagates in carbon tetrachloride with a speed of 2) 2.05!108 m/s.

The wavelength of the wave in vacuum is closest to:

A) 413 nm

B) 368 nm

C) 505 nm

D) 459 nm

E) 314 nm

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Answers (1)
  1. 15 August, 01:34
    0
    E) 314 nm

    Explanation:

    The relationship between speed, frequency and wavelength for an electromagnetic wave is given as:

    V = fλ

    Where;

    V is the speed of the wave

    f is the frequency of the wave

    λ is the wavelength.

    Making λ the subject of the equation,

    λ = V / f

    λ = 2.05 x 10^8 / 6.53 x 10^14

    = 3.14 x 10^-7 m

    = 314 x 10^-9 m

    = 314 nm
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