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Dual Nature of Radiation and Matter — Physics STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 SciencePhysicsDual Nature of Radiation and Matter3 Marks
Question
Using the values of work function given in Table $14.1$, tell which metal will require the highest frequency of incident radiation to generate photocurrent.

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Answer

Gold.
[ Note: $W _0= hv _0$, where h is Planck's constant. The larger the work function $\left( W _0\right)$, the higher is the threshold frequency $\left( v _0\right)$.]

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