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Question

Explain electrons and photons.


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Solution

Electron:

  1. An electron is a subatomic particle. A sub-atomic particle is part of the atom.
  2. An electron is a negatively charged particle that has a charge magnitude of 1.6×10-19C.
  3. It has a rest mass equal to 9.11×10-31kg.
  4. A moving electron exhibits wave-like property according to the dual nature of matter.
  5. Electrons can interact with matter.

Photon:

  1. Photon is the light particle. The energy of photons depends on the frequency of light.
  2. The rest mass of the photon is zero but it has a non-zero mass when it moves, so it interacts with matter as well.
  3. Interference and compton scattering are some of the phenomena exhibited by photons.
  4. The speed of a photon depends on the medium through which it propagates.

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