Physics, asked by Bappimn, 1 year ago

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

Answers

Answered by KrishSS
10
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.
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