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Manipal MET2020PhysicsDual Nature of Matter

The maximum kinetic energy of photoelectrons coming out of a metal surface is 10 eV . The minimum voltage required to stop, the emission of electrons from this metal surface is

Options

  1. A10 V
  2. B5 V
  3. C-5 ~V
  4. D-10 ~V

Correct answer

D. -10 ~V

Step-by-step solution

So, the graph between acceleration and time is a line parallel to time axis as acceleration is constant. Here, K_ =10 eV So, the stopping potential, e V₀=K_ max e V₀=10 eV or V₀=-10 ~V

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