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The threshold frequency of a certain met...

The threshold frequency of a certain metal is `3.3xx10^(14)Hz`. If light of frequency `8.2xx10^(24)` Hz is incident on the metal, then the cut off voltage for photoelectric emission is `("Given h"=3.63xx10^(-34)Js)`

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`eV_(s)=h (v-v_(0)), " "V_(s)=(h (v-v_(0)))/(e) = (6.63xx10^(-34) (8.2-3.3)xx10^(14))/(1.6xx10^(-19)), V_(s) =2V`
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