Two bems of monochromatic ligth have similar intensities.The light in one beam has wavelength 350 nm and the light in the other bem has waveelngth 700 nm.The two bems are incident separately on three different metal surfaces .'The work function of each of these suraces is as given in the following table:
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State which combination ,if any ,of monochromatic ligth and metal surface could give rise to photolelectric emission.Gie a quantitative explanation of your answer.