Podcast
Questions and Answers
What is the charge of a neutron?
What is the charge of a neutron?
- Variable
- + 1.6 × 10-19 C
- – 1.6 × 10-19 C
- Zero (correct)
What is the minimum energy needed to remove the loosest electrons from the surface of a metal?
What is the minimum energy needed to remove the loosest electrons from the surface of a metal?
- Work function Φ (correct)
- Kinetic energy
- Thermionic emission
- Electric potential energy
What is the unit of energy gained or lost by an electron when it moves through a potential difference of 1 V?
What is the unit of energy gained or lost by an electron when it moves through a potential difference of 1 V?
- Ampere
- Joule
- Electronvolt (correct)
- Watt
In a cathode ray tube, what happens to the electrons when they strike the screen?
In a cathode ray tube, what happens to the electrons when they strike the screen?
What type of radiation has extremely high frequency and short wavelength?
What type of radiation has extremely high frequency and short wavelength?
What is the process by which electrons are emitted from the surface of a hot metal?
What is the process by which electrons are emitted from the surface of a hot metal?
What is the energy converted to when an electron moves through an electric field?
What is the energy converted to when an electron moves through an electric field?
What is the energy of a photon proportional to?
What is the energy of a photon proportional to?
What is the minimum frequency needed to cause photoelectric emission?
What is the minimum frequency needed to cause photoelectric emission?
What is the function of a photocell?
What is the function of a photocell?
What is the force on a charged particle moving through a magnetic field equal to?
What is the force on a charged particle moving through a magnetic field equal to?
What is the work function of a metal equal to?
What is the work function of a metal equal to?
What is the energy of a photon equal to?
What is the energy of a photon equal to?
