The minimum value of KE of photoelectron emitted from a metal surface of work function 4 eV, when a light of energy 10 eV incident on it, is
Text Solution
Verified by ExpertsThe correct answer is:
C
Given:
Incident photon energy 
Work function 
Thus, maximum kinetic energy:
Minimum kinetic energy of emitted photoelectrons 
, because electrons deeper in the metal lose extra energy before escaping.
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