The difference between the incident energy and threshold energy
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◆Threshold energy is minimum energy required to #just eject electron from metal surface.
◆Incident energy is total of threshold energy required to eject electron from metal surface and kinetic energy to move electron after ejecting out from the metal surface.
◆Incident energy is total of threshold energy required to eject electron from metal surface and kinetic energy to move electron after ejecting out from the metal surface.
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