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Question

The energy of the most energetic photoelectrons emitted from a metal target depends upon
  1. Wave length of the incident radiation
  2. Intensity of the incident radiation
  3. Threshold frequency of the metal
  4. Photoelectric work function of the metal

A
Intensity of the incident radiation
B
Photoelectric work function of the metal
C
Threshold frequency of the metal
D
Wave length of the incident radiation
Solution
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In a photoelectric effect, the maximum kinetic energy of the ejected electron is given by, Kmax=hνW=hcλW
Where λ is the wavelength of the incident photon, W is the work function of the metal.
Also work function, W=hν0 where ν0 is the threshold frequency of the metal.
Thus, only option B is wrong.

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