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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Definitions:

Federal Welfare

Government programs designed to aid the well-being of the population, including financial assistance, healthcare, and social services, aimed at supporting those in poverty or need.

Black Churchgoers

Individuals who are part of the African American community who regularly attend church services.

Social Services

Public services provided by a government, NGOs, or other organizations to help improve welfare and living conditions.

Freedmen's Bank

Originally known as the Freedman's Saving and Trust Company, this was a private corporation chartered by the U.S. government to encourage and guide the economic development of newly freed African Americans after the Civil War.