11 Questions
What is the purpose of the hot cathode in an X-ray tube?
Produce electrons
Why is the vacuum important in an X-ray tube?
To ensure electrons are not slowed down
What is the Photoelectric effect?
Emission of electrons from a metal surface due to suitable electromagnetic radiation
Which statement correctly describes a photon?
Quantum of light energy
What happens to the energy of a photon that exceeds the work function when it strikes a metal?
It is transferred to the electron as kinetic energy
What does the threshold frequency signify in the photoelectric effect?
Minimum frequency needed to cause photoelectric emission
Which component is responsible for producing X-rays in an X-ray tube?
Tungsten target
What is the charge of a single electron?
1.6 $\times$ 10^-19 C
What is the minimum energy required to remove the loosest electrons from a metal's surface called?
Work function
Which of the following best describes what happens when an electron moves through an electric field?
Electric potential energy is converted to kinetic energy.
What is thermionic emission?
The emission of electrons from the surface of a hot metal.
Learn about the properties of electrons, including their negative charge and the concept of electronvolt (eV) in electric fields. Understand how energy relates to voltage and electron charge.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
