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Card 1 of 4

What process at the X-ray tube cathode releases electrons?

A

Field emission: applying a strong electric field until electrons escape from its surface.

B

Secondary emission: bombarding a metal surface until particles eject electrons from it.

C

Photoelectric emission: illuminating a metal surface until photons eject electrons from it.

D

Thermionic emission: heating a filament until electrons are emitted from its surface.

Card 1 of 4

Using X-rays Flashcards

  1. A Level
  2. /Physics
  3. /Using X-rays

4 flashcards on OCR A A Level Physics Using X-rays: the key terms, definitions and equations you need to recall for Component 01, Component 02 and Component 03.

Flashcards