The ejection of the photoelectron from the Silver metal in the photoelectric effect experiment can be stopped by applying the voltage of 0.35 V when the radiation 25 6.7 nm is used. Calculate the work function for Silver metal .

Dear student,

Energy of incident radiation = E = hcλE = 6.626 × 10-34×3.0 × 108256.7 ×10-9= 7.74 ×10-19 JE = 7.74 ×10-19 1.602 × 10-19 = 4.83 eVThe potential energy = 0.35 eVWork function = 4.83 - 0.35 = 4.48 eV

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