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COMEDK2012PhysicsDual Nature of Matter

The graph of kinetic energy of photoelectron versus frequency of incident radiation is shown for two metals M and N . We may definitely conclude

Options

  1. Awork function of M> work function of N
  2. Bwork function of M < work function of N
  3. Cwork function of M= work function of N
  4. Dat the threshold frequency of M the kinetic energy of the photoelectron emitted by M is more than that emitted

Correct answer

A. work function of M> work function of N

Step-by-step solution

Work function of a metal, aligned W &=h v₀ where, h &= Planck's constant v₀ &= threshold frequency. aligned As, the threshold frequency of metal M is more than that of metal N , so work function of M is more than that of N , while their kinetic energies are equal.

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