A change in energy of a photon occurs when it collides with an electron at rest and is known as:
Correct answer: B. Compton effect
- A. Photoelectric effect
- B. Compton effect
- C. Pair conduction
- D. Annihilation
Explanation
In the Compton effect, the photon collides with an electron at rest and transfers some of its energy to the electron. The photon's wavelength is increased as a result, and its energy is decreased. The Compton effect is a purely elastic collision, meaning that the total energy and momentum of the system are conserved.
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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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