The work function of a certain metallic surface is

PHYSICS · Single correct · CBSE · Physics · Dual Nature of Radiation and Matter · Dual Nature of Radiation and Matter

Problem

The work function of a certain metallic surface is 2.5 eV2.5\,\text{eV}. Determine its threshold wavelength. (a) 3.10×102 nm3.10\times10^{2}\,\text{nm} (b) 6.20×102 nm6.20\times10^{2}\,\text{nm} (c) 4.96×102 nm4.96\times10^{2}\,\text{nm} (d) 2.48×102 nm2.48\times10^{2}\,\text{nm}

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