The work function for Al, K and is 4.28 eV, 2.30 eV and 5.65 eV respectively. Their respective threshold frequencies would be
The work function for Al, K and is 4.28 eV, 2.30 eV and 5.65 eV respectively. Their respective threshold frequencies would be
A. `Pt gt Al gt K`
B. `Al gt Pt gt K`
C. `K gt Al gt Pt`
D. `K+hv`
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Correct Answer - A
Work function, `W_(0)=hv_(0)`
where, `v_(0)=`threshold frequency
so, `omega_(0)=v_(0)`. Hence, `Pt gt Al gt K`
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