The ejection of the photoelectrons from the silver metal in the photoelectric effect experiment can be stopped by applying the voltage of 0.35 V when the radiation 256.7 nm is used. Calculate the work function for silver metal.

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Alok Kumar Singh | Contributor-Level 10

9 months ago

λ = 256.7 nm = 256.7 x 10^-9 m

K.E. = 0.35 eV

E = hc/ λ = (6.626 x 10^-34Js) / (3 x 10⁸ ms^-1) / (256.7 x 10^-9 m)

= (6.626 x 3 x 10^-17) J/ 256.7

= (6.626 x 3 x 10^-17) / (256.7 x 1.602 x 10^-19) eV

E = 4.83 eV

The potential applied to silver gets converted into kinetic energy of the photoelectron.

So, Kinetic e

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