If light of wavelength 412.5 nm is incident on each of the metals given below, which ones will show photoelectric emission and why?
Metal work function (eV)
Na. 1.92
K 2.15
Ca. 3.20
Mo. 4.17
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We need to find the energy for the wavelength given first. so Excited=12400/4125=3eV
this is greater than Na and K so only those two will emit photoelectrons.
this is greater than Na and K so only those two will emit photoelectrons.
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