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Umme Asked a Question
August 10, 2020 5:43 pmpts 30 pts
A point source of monochromatic light of 1.0mW is placed at a distance of 5.0 m from a metal surface. Light falls perpendicularly on the surface. Assume wave theory of light to hold and also that all the light falling on the circular area with radius = 1.0 x 10"m (which is few times the diameter of an atom) is absorbed bya single electron on the surface. Calculate the time required by the electron to receive sufficient energy to come out of the metal if the work function of the metal is 2.0 eV.
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  • Ruby negi thankyou
    seee this..
    • cropped581605867.jpg
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  • Chandra dhawan
    see this attachment
    • cropped8087797769549850554.jpg
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    Chandra dhawan
    it will help you