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PhysicsNEET 2022Photoelectric effect and Einstein's equation

Dual Nature of Radiation and Matter

When two monochromatic lights of frequency ν\nu and ν2\dfrac{\nu}{2} are incident on a photoelectric metal, their stopping potentials become Vs2\dfrac{V_s}{2} and VsV_s respectively. The threshold frequency for this metal is:

  1. A.32ν\dfrac{3}{2}\nu✓
  2. B.2ν2\nu
  3. C.3ν3\nu
  4. D.23ν\dfrac{2}{3}\nu

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