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26 May, 19:06

Sunlight has its maximum intensity at a wavelength of 4.83 x 10'm; wha energy does this correspond to in e?

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  1. 26 May, 21:52
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    E = 2,575 eV

    Explanation:

    For this exercise we will use the Planck equation and the relationship of the speed of light with the frequency and wavelength

    E = h f

    c = λ f

    Where the Planck constant has a value of 6.63 10⁻³⁴ J s

    Let's replace

    E = h c / λ

    Let's calculate for wavelengths

    λ = 4.83 10-7 m (blue)

    E = 6.63 10⁻³⁴ 3 10⁸ / 4.83 10⁻⁷

    E = 4.12 10-19 J

    The transformation from J to eV is 1 eV = 1.6 10⁻¹⁹ J

    E = 4.12 10⁻¹⁹ J (1 eV / 1.6 10⁻¹⁹ J)

    E = 2,575 eV
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