Calculate the threshold frequency for emission of photoelectrons from sodium if its work function is `1.83 eV`. (Take, `h=6.63xx10^(-34)` Js)

Explanation

Using `φ_(0)=hv_(0)rArrv_(0)=(φ_(0))/(h)`
`=(1.83xx1.6xx10^(-19))/(6.63xx10^(-34))=4.416xx10^(14)` Hz