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1 March, 23:06

What is the frequency of an electromagnetic wave that has a wavelength of

7.6 x 10^-6 m in a vacuum? (The speed of light in a vacuum is 3.00 x 10^8

m/s.)

A. 2.3 x 10^3 Hz

B. 1.3 x 10^5 Hz

C. 4.0 x 10^13 Hz

D. 2.5 x 10^-14 Hz

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Answers (1)
  1. 1 March, 23:47
    0
    D. 2.5 x 10 ^-14 Hz

    Explanation:

    Use wavelength formula: v = f x wavelength

    Rearrange formula for frequency.

    f = wavelength / v

    f = 7.6 x 10 ^-6 / 3.00 x 10 ^8

    f = 2.5 x 10^-14 Hz
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