The work function of cesium is \( 2.14 \mathrm{eV} \). Find (a) the threshold frequency for cesi...

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The work function of cesium is \( 2.14 \mathrm{eV} \). Find (a) the threshold frequency for cesium and (b) the wavelength of the incident light if the photocurrent is brought to zero by a stopping potential of \( 0.60 \mathrm{~V} \).
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