Maximum kinetic energy of photoelectrons emitted from a metal surface, when light of wavelength `lambda` is incident on it, is 1

Maximum kinetic energy of photoelectrons emitted from a metal surface, when light of wavelength `lambda` is incident on it, is 1 eV. When a light of wavelength `lambda/3` is incident on the surfaces, maximum kinetic energy becomes 4 times. The work function of the metal is
A. `"hc"/lambda`
B. `"hc"/(3lambda)`
C. `(2hc)/lambda`
D. `"hc"/(2lambda)`

Maximum kinetic energy of photoelectrons emitted from a metal surface, when light of wavelength `lambda` is incident on it, is 1 eV. When a light of w

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