When a Photon Collides with a Free Electron at Rest

question 10

Multiple Choice

When a photon collides with a free electron at rest and the direction of motion of the photon changes,

• A) the magnitude of the momentum of the photon does not change.
• B) the momentum of the electron does not change.
• C) the kinetic energy of the electron does not change.
• D) the total energy of the photon does not change.
• E) both the magnitude of the momentum and the total energy of the photon decrease.

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