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Given that work function for sodium metal is 1.82eV,,calculate the threshold frequency for sodium.​

Respuesta :

[tex]\\ \sf\Rrightarrow E=hv[/tex]

[tex]\\ \sf\Rrightarrow v=\dfrac{E}{h}[/tex]

[tex]\\ \sf\Rrightarrow v=\dfrac{1.82\times 1.6\times 10^{-19}J}{6.626\times 10^{-34}Js}[/tex]

[tex]\\ \sf\Rrightarrow v=0.439\times 10^{15}s^{-1}[/tex]

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