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What is the work function (w(o)) of the ...

What is the work function `(w_(o))` of the metal whose threshold frequency `(v_(0))` is `5.2 xx 10^(14)s^(-1)` ?

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Threshold frequency of metal `(v_(0))= 5.2 xx10^(14)s^(-1)`
Work function `(w_(0)) = hv_(0)`
` w_(0)= 6.626 xx 10^(-34) Jsxx 5.2 xx 10^(-14) s^(-1)`
Work function `(w_(0)) = 3.44 xx 10^(-19)J`
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