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MHT CET Medical202622 April 2026Evening ShiftPhysicsDual Nature of MatterActual

If the photoelectric work function of a metal is ' ' and the frequency of incident light is ' ', there is no emission of photoelectrons if

Options

  1. A< h
  2. B= h
  3. C> h
  4. Dh

Correct answer

A. < h

Step-by-step solution

According to Einstein's photoelectric equation, the energy of the incident photon is given by E = h . For photoelectric emission to take place, the energy of the incident photon must be greater than or equal to the work function of the metal, i.e., h , which implies h . Therefore, there will be no emission of photoelectrons if the energy of the incident photon is less than the work function, which means h Answer: < h

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