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- 1. Multiple-choice2 minutes1 pt
A particle of light is called a...
Photoelectron
Photon
Proton
Electron
- 2. Multiple-choice2 minutes1 pt
The only way to increase the number of photoelectrons emitted is by increasing the _________ of the light
Intensity
Wavelength
Frequency
Energy
- 3. Multiple-choice2 minutes1 pt
What color of light has the greatest energy per photon?
Red
Green
Blue
Violet
- 4. Multiple-choice1 minute1 ptA particle of light is called a photon.TrueFalse
- 5. Multiple-choice30 seconds1 pt
The energy of photoelectrons emitted from a metal surface can be increased by
using light of higher frequency.
using light of longer wavelength.
using light of higher intensity.
using monochromatic, polarized light.
- 6. Multiple-choice2 minutes1 pt
This image is an illustration ofphotoelectric effectDalton's atomic theoryBohr modelQuantum mechanical model - 7. Multiple-choice1 minute1 ptThe photoelectric effect only occurs if the light shining on the metal is:coherent.above a minimum intensity.above a minimum frequency.above a minimum wavelength.
- 8. Multiple-choice5 minutes1 ptDoes high-frequency or low frequency light cause the ejection of a greater number of electrons from a metal surface?only high frequencyonly low frequencyboth of themdoesn't depend to frequency
- 9. Multiple-choice2 minutes1 pt
What is the best description of 'threshold frequency'?
The minimum energy needed for electrons to escape a surface.
The maximum kinetic energy that an emitted electron has.
The minimum frequency of a photon that will cause an electron to be emitted.
The frequency that an emitted electron will have.
- 10. Multiple-choice1 minute1 ptWhich statement about the photoelectric effect is correct?Electrons are emitted instantaneously.Electrons are not emitted below a certain wavelength.You can change the energy of the electrons by changing the intensity.Electron energy is independent of frequency.
- 11. Multiple-choice1 minute1 ptThe photoelectric effect is when:Electrons collide inside a metal to release photons.One incident metal electron releases one photon.One incident photon releases one electron from a metal.Photons are absorbed in to metal ions releasing electrons.
