JEE MainPhysicsDual Nature of RadiationNumerical+4 / −1
The surface of a metal is illuminated alternately with photons of energies E1 = 4 eV and E2 = 2.5 eV respectively. The ratio of maximum speeds of the photoelectrons emitted in the two cases is 2. The work function of the metal in (eV) is .
Numerical answer
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