Calculate the work function of Cesium from the \( \mathrm{P} \) obs...

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Calculate the work function of Cesium from the
\( \mathrm{P} \)
observations of the photoelectric experiment plotted
W
on the graph shown in figure.
(1) \( 1.2 \mathrm{eV} \)
(2) \( 1.75 \mathrm{eV} \)
(3) \( 2 \mathrm{eV} \)
(4) \( 2.5 \mathrm{eV} \)
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