Stopping potential for a metal surface in case of photoelectric emission depends on:
Correct answer: C. The frequency of incident light and the work function for metal surface
- A. The threshold frequency for the metal surface
- B. The intensity of incident light
- C. The frequency of incident light and the work function for metal surface
- D. The threshold energy for the metal surface
Explanation
The current is same but stopping potential is different for each frequency of incident lightThis fact shows that maximum K.E. of photoelectrons directly depends upon the frequency of light but independent of the intensity of light.Energy of photon = work function + Max. K.E. of photoelectronshf = Φ+ K.Emax=Φ + VoeVoe=hf - Φ
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About Photons and the Particle Model of Light
The particle model treats light as photons with energy E equals hf and momentum related to wavelength. Questions involve the photoelectric effect, work function, threshold frequency, stopping potential and photon energy, while distinguishing particle behaviour from the wave description of interference and diffraction.
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