Respuesta :
The energy of one photon is 4.56×[tex]10^{-19}[/tex]J
Electromagnetic radiations consist of quanta of energy called photons which have energy, E which is equal to:
E = hν......(1)
where h is the Planck's constant which is and ν is the frequency of light radiation.
But ν = c/λ ......(2)
Putting equation (2) into (1), we have
E = hc/λ......(3)
c is the speed of light (c =3×[tex]10^{8}[/tex]) while λ is the wavelength of light.
Wavelength λ = 436nm = 3× [tex]10^{-19}[/tex]m
Therefore the energy E of one photon of this light, using equation (3) is (6.626×[tex]10^{-34}[/tex]×3×[tex]10^{8}[/tex])÷4.36×[tex]10^{-9}[/tex] = 4.56×[tex]10^{-19}[/tex]J
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