Photons of energy 6 ev fall on the surface of a metal with work function 4 ev. The stopping potential of the metal surface is
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Answered by
2
Answer:
The minimum reverse potential to be applied for stopping the emission of electrons is : A . 2 V.
Answered by
14
Answer:
2V
Explanation:
Maximum Kinetic energy of ejected photon in electron volt is,
KE = Incident energy - threshold energy
KE = (6 - 4)eV = 2eV
Energy = charge x voltage
2eV = Ye
where, e = charge of electron and Y is unknown voltage
Y = 2V
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