Have an account?
Skip to Content
Build your own quiz
Suggestions for you
15 questions
Show Answers
See Preview
- 1. Multiple Choice
A particle of light is called a...
Photoelectron
Photon
Proton
Electron
- 2. Multiple Choice
The only way to increase the number of photoelectrons emitted is by increasing the _________ of the light
Intensity
Wavelength
Frequency
Energy
- 3. Multiple Choice
What color of light has the greatest energy per photon?
Red
Green
Blue
Violet
- 4. Multiple Choice
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.
- 5. Multiple ChoiceThe 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.
- 6. Multiple Choice
This image is an illustration ofphotoelectric effectDalton's atomic theoryBohr modelQuantum mechanical model - 7. Multiple Choice
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.
- 8. Multiple Choice
A metal with a work function of 3.5 eV is exposed to photons with an energy of 3.7 eV. What is the maximum kinetic energy of the emitted photoelectrons?
0.2 eV
0.9 eV
1.1 eV
7.7 eV
- 9. Multiple ChoiceThe diagram shows a circuit involving a photoelectric cell. When UV light is shone onto the metal cathode, electrons are emitted establishing a photocurrent.
Which of the following changes could cause the photocurrent to stop?Increasing the potential difference of the power supply.Increasing the frequency of the UV light.Increasing the intensity of the UV light.Changing the metal surface to one with a smaller work function. - 10. Multiple ChoiceThe equation for the photoelectric effect is
eV = hf - Φ
The graph of electron energy against frequency isa straight line through the origina straight line gradient ha straight line with a positive y interceptnot a straight line - 11. Multiple Choice
Use the graph to find the threshold frequency.
−12×10-19 Hz
0 Hz
2×1015 Hz
4×1015 Hz
- 12. Multiple Choice
What is the energy of a photon with a frequency of 5x1014 Hz? (you need to do calculation. You have enough time) h=6.6x10-34 J/Hz
2.5x10-19 J
3.0x10-19 J
3.3x10-19 J
4.5x10-19 J
- 13. Multiple ChoiceThe graph shows maximum kinetic energy of emitted electrons against frequency of incident light for a number of different metals.
Plank's constant is determined by:the x-intercept.the y-intercept.the gradient.the area under the graph. - 14. Multiple Choice
The SI unit of frequency is the __________.
meter
second
hertz
meter per second
- 15. Multiple Choice
When light of specific frequencies is shined on a surface, electrons are ejected from the surface. This is the idea behind...
Quantization of Energy
Photoelectric Effect
Compton Effect
deBroglie Waves
Uncertainty Principle
- Answer choicesTagsAnswer choicesTags