two metals A and b have work function 2eV and 4eV respectively which of the metals has a smaller threshold wavelenght? pls solve ftafat
Let us consider a particle of mass ‘m’ rotating about a
We know,
E = hν = hc/λ
Thus, λ or threshold wavelength is inversely proportional to the energy or the work-function.
So, metal B which has higher work function of 4 eV will have smaller threshold wavelength.