KE emitted=workfunction+incomingenergy
incomingenergy= Plancksconstant(c/lambda)
solve for work function
cutoff wavlength
c/lambdacutoff= work function
When light of wavelength 130 nm falls on a cobalt surface, electrons having a maximum kinetic energy of 4.55 eV are emitted. Find values for the following.
(a) the work function of cobalt (in eV)
(b) the cutoff wavelength (in nm)
(c) the frequency corresponding to the cutoff wavelength (in Hz)
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