When the intensity of light falls on a metal surface, it results in the decrease of the
Correct answer: D. number of electrons emitted per second
- A. value of potential difference
- B. velocity of the emitted electrons
- C. kinetic energy of the emitted electrons
- D. number of electrons emitted per second
Explanation
When light with higher intensity falls on a metal surface, more electrons are ejected from the surface, leading to an increase in the number of electrons emitted per second. This is a key principle of the photoelectric effect. The other options are incorrect because they do not directly correlate with the effect of light intensity on the emission of electrons from a metal surface.
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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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