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[" [d] "],[" Light of two different freq...

[" [d] "],[" Light of two different frequencies whose photons have energies leV and "2.5eV" respectively."],[" successively illuminate a metal whose work function is "0.5eV" .The ratio of the maximun "],[" speeds of the emitted electrons will be."],[[" (a) "1:5," (b) "1:4," (c) "1:2," (d) "1:1]],[" [c] "]

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