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प्रश्न
What is the work function of caesium used to find its threshold frequency?
विकल्प
\[2.14\ \mathrm{eV}\]
\[0.60\ \mathrm{eV}\]
\[454\ \mathrm{eV}\]
\[5.16\times10^{14}\ \mathrm{eV}\]
MCQ
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उत्तर
The work function of caesium is \[2.14\ \mathrm{eV}\]. It is the photon energy required at the threshold frequency.
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