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:

Paresthesia

An abnormal sensation, typically tingling or pricking ('pins and needles'), caused by pressure on or damage to peripheral nerves.

Cephalalgia

A medical term referring to pain located in the head, commonly known as a headache.

Cerebral Palsy

A neurological disorder caused by brain damage around the time of birth, affecting movement and muscle tone.

Sensory

Pertaining to the senses or sensation, involving the reception and transmission of stimuli to the central nervous system.