Determine the cutoff wave length of potassium

Reference no: EM13522059

work function of potassium is 2.225 eV.

a) Find the cutoff wave length of potassium

b) If the maximum energy of teh photoelectron due to some x-ray, form the surface of potassium is 1.2 eV, find the frequency of the x-ray.

Reference no: EM13522059

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