What is the effect of intensity on the stopping potential?
Correct answer: D. No effect
- A. As intensity increases, stopping potential increases linearly
- B. As intensity increases, stopping potential decreases linearly
- C. As intensity decreases, stopping potential increases exponentially
- D. No effect
Explanation
Changing the intensity of incident radiation does not affect the stopping potential. As the intensity increases, the number of photoelectrons ejected increases. However. the maximum velocity attained by them remains independent of the intensity of the radiation. It only depends on the frequency of the incident radiation.
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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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