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12.) Given that a photon of light of wavelength10000 A has energy 1.23 eV. Now when light ofintensity lo and wavelength 5000 A falls on a photocell the saturation current and stopping potentialare 0.40 HA and 1.36 V respectively. The workfunction is(2) 1.10 eV(4) 2.47 eV(1) 0.43 eV1.36 eV

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