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Which one of the correct definition of work function
  • a)
    minimum temperature at which thermionic emission occurs.
  • b)
    minimum excess energy needed for thermionic emission.
  • c)
    maximum temperature up to which thermionic emission occurs.
  • d)
    optimum energy for thermionic emission.
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Which one of the correct definition of work functiona)minimum temperat...
Work function is the minimum excess energy needed or required for thermionic emission and it is the emission of electrons form the heated of metals.
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Which one of the correct definition of work functiona)minimum temperature at which thermionic emission occurs.b)minimum excess energy needed for thermionic emission.c)maximum temperature up to which thermionic emission occurs.d)optimum energy for thermionic emission.Correct answer is option 'B'. Can you explain this answer?
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