Threshold frequency
A metal in a binding-energy data set has work function \(2.8\,\text{eV}\). Using \(h=4.136\times10^{-15}\,\text{eV s}\), calculate threshold frequency in \(10^{14}\,\text{Hz}\). Use the diagram labels before calculating the requested value. Enter the numerical result and choose the interpretation that matches the quantum or nuclear physics.
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Worked practice: physics data and result
Read the physical quantities first, then calculate the result and state what it means.