When photons of energy hv are incident on the surface of photosensitive material of work function hv0, then:
Correct answer: C. The kinetic energy of the fastest electron is h (v-v0)
- A. The kinetic energy of all emitted electrons is hv0
- B. The kinetic energy of all emitted electrons is h (v-v0)
- C. The kinetic energy of the fastest electron is h (v-v0)
- D. The kinetic energy of all emitted electrons is hv
Explanation
The remaining energy hv-hv0 will be maximum kinetic energy that ejected electrons can have.View the attached image for further explanation.
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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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