JAMB Physics 2013 Objective — Question 47
Question 47 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2013 Objective paper, with the correct answer and a full explanation.
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In photo-emission the number of photoelectrons ejected per second depends on the
- A. frequency of the beam
- B. work function of the metal
- C. threshold frequency of the metal
- D. intensity of the beamCorrect
Explanation
The number of photoelectrons ejected in a photoemission depends on the intensity of light, while the energy of the emitted photoelectrons depends on the frequency of the light and the work function.
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