jenkuehn8409 jenkuehn8409
  • 03-08-2022
  • Physics
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What is the energy (in evev) of a photon of visible light that has a wavelength of 500 nmnm?

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Reideen
Reideen Reideen
  • 03-08-2022

Answer:

  • E≈2,5 eV

Explanation:

_______________

λ=500 nm = 500·10⁻⁹ m

c=3·10⁸ m/s

h=6,63·10⁻³⁴ J·s = 4,14·10⁻¹⁵ eV·s

_______________

E - ?

_______________

[tex]\displaystyle \boldsymbol{E}=h\nu =h \frac{c}{\lambda} =4,14\cdot 10^{-15} \; eV\cdot s\cdot \; \frac{3\cdot 10^8\; m/s}{500\cdot 10^{-9}\; m} =2,484\; eV\approx \boldsymbol{2,5\; eV}[/tex]

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