Light of two different frequencies whose photons have energies 1 eV and 2.5 eV respectively illuminate...

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Light of two different frequencies whose photons have energies 1 eV and 2.5 eV respectively illuminate a metallic surface whose work function is 0.5 eV successively. Ratio of maximum speeds of emitted electrons will be (a) 1:4 (c) 1:1 (b) 1:2 (d) 1:5 Light of two different frequencies whose photons have energies 1 eV and 2.5 eV respectively illuminate a metallic surface whose work function is 0.5 eV successively. Ratio of maximum speeds of emitted electrons will be (a) 1:4 (c) 1:1 (b) 1:2 (d) 1:5

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