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3 February, 02:15

It is determined that a certain wave of infrared light has a wavelength of 8.45 mm c=2.99 x 108 m/s, what is the frequency of this infrared wave? (Round your an

figures.)

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  1. 3 February, 02:24
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    Answer: 3.54 x 10^10Hz

    Explanation:

    Given that:

    wavelength = 8.45 mm

    Since unit of wavelength is metres, convert 8.45 millimeters to metres

    (If 1000mm = 1m

    8.45mm = 8.45/1000 = 8.45 x 10^-3m)

    Wave speed (c) = 2.99 x 10^8 m/s

    Frequency of the infrared wave = ?

    Now apply the formula

    wavespeed = frequency x wavelength

    i. e C = F λ

    Where F = C / λ

    F = 2.99 x 10^8 m/s / 8.45 x 10^-3m

    F = 3.54 x 10^10Hz

    Thus, the frequency of this infrared wave is

    3.54 x 10^10 Hertz
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