The work function of sodium is 2.3 eV

PHYSICS · Subjective · A Level · Physics · Particles and radiation · Particles and radiation

Problem

The work function of sodium is 2.3 eV. Calculate the threshold frequency required for photoelectric emission from sodium. (Take

h = 6.63\times10^{-34}\,\text{J s}

and

1\,\text{eV} = 1.6\times10^{-19}\,\text{J}

)

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