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AP EAMCET202423 May 2024Morning ShiftPhysicsDual Nature of MatterActual

A photon incident on a metal of work function 2 eV produced photo electron of maximum kinetic energy of 2 eV . The wavelength associated with the photon is

Options

  1. A6200 Å
  2. B3100 Å
  3. C9300 Å
  4. D2000 Å

Correct answer

B. 3100 Å

Step-by-step solution

For the metal, ₀=2 eV , k _ =2 eV By Einstein's photoelectric equation, E = ₀+ k _ =2+2=4 eV Wavelength of the photon is = 12400 eV -Å 4 eV =3100 Å

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