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Dual Nature Of Radiation

VITEEE 2024

MCQ+4 / -12024

A metal surface is illuminated with photons of energies $E_1=4 \mathrm{eV}$ and $E_2=2.5 \mathrm{eV}$ respectively. The ratio of maximum speeds of the photoelectrons in two cases is 2 .
Work function of metal surface will be

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