The portion of the visible spectrum that appears brightest human eye is around 560 nm in wavelength, which corresponds to yellow-green. What

Question

The portion of the visible spectrum that appears brightest human eye is around 560 nm in wavelength, which corresponds to yellow-green. What is the frequency of 560 nm light?

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Trúc Chi 5 years 2021-08-02T14:47:49+00:00 2 Answers 326 views 1

Answers ( )

  1. haidang
    0
    2021-08-02T14:48:49+00:00
    Reply

    Answer:

    5.36×10^14 Hz

    Explanation:

    Data obtained from the question include:

    Wavelength = 560nm

    Recall: 1nm = 1×10^-9m

    Therefore, 560nm= 560 x 1×10^-9 = 5.6×10^-7 m

    Velocity = 3×10^8 m/s

    Frequency =?

    Velocity, frequency and wavelength of a wave are related by the equation:

    Velocity = wavelength x frequency

    Using the above equation, the frequency of the 560nm light can be obtained as follow:

    Velocity = wavelength x frequency

    3×10^8 = 5.6×10^-7 x frequency

    Divide both side by 5.6×10^-7

    Frequency = 3×10^8/5.6×10^-7

    Frequency = 5.36×10^14 Hz

    Therefore, the frequency of 560 nm light is 5.36×10^14 Hz

  2. RuslanHeatt
    0
    2021-08-02T14:49:19+00:00
    Reply

    Answer:

    5.4 * 10^17 Hz

    Explanation:

    Wavelength, λ = 560 nm = 560 * 10^(-9) m

    Speed, v, in terms of frequency, f , and wavelength, λ, is given as:

    v = λ*f

    The speed, v, of visible light is 3 * 10^8 m/s.

    Hence, frequency will be:

    f = v/λ

    f = (3 * 10^8) / (560 * 10^(-9))

    f = 0.0054 * 10^17 = 5.4 * 10^14 Hz

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