How many photons of light having a wavelength 500 nm would?
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Let Ep= Energy of single photon associated with the wavelength = (hc)/ wavelength
= 12400 eV-A/ 5000A = 2.48eV (Remember value of hc~ 12400eV-A° for quick calculation)
say n number of photons required to generate 1 Joule. So, nEp = 1 joule
n= 1/2.48eV
= 12400 eV-A/ 5000A = 2.48eV (Remember value of hc~ 12400eV-A° for quick calculation)
say n number of photons required to generate 1 Joule. So, nEp = 1 joule
n= 1/2.48eV
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