Awesome Quiz On Photoelectric Effect
8 Questions
| Total Attempts: 1521
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Questions and Answers
- 1.What is the term used to refer to the minimum energy required for a photoelectron to escape from a metal plate in a photocell?
- A.
Stopping voltage
- B.
Planck’s constant
- C.
Threshold wavelength
- D.
Work function
- 2.Threshold frequency is to work function as hertz is to which one of the following?
- A.
Coulomb
- B.
Joule
- C.
Newton
- D.
Watt
- 3.The variable that varies directly with the amount of current produced by photoelectrons
- A.
The intensity of the incident light
- B.
The frequency of the incident light
- C.
The wavelength of the incident light
- D.
The work function of the metal surface
- 4.The threshold frequency has a value of X. If the frequency of the incident light increases from 2X to 4X, then the resulting current of photoelectrons
- A.
Is doubled
- B.
Is increased by a factor or 3
- C.
Reduced by half
- D.
Remains the same
- 5.When electromagnetic radiation with a wavelength of 350 nm falls on a metal, the maximum kinetic energy of the ejected electrons is 1.20 eV. What is the work function of the metal?
- A.
1.3 eV
- B.
2.4 eV
- C.
5.4 eV
- D.
5.7 eV
- 6.Calculate the wavelength of a photon with 3.2 × 10–19 J of energy.
- A.
210 nm
- B.
420 nm
- C.
530 nm
- D.
620 nm
- 7.
![The graph below shows the relationship between the frequency of radiation incident on a photosensitive surface and the maximum kinetic energy of the emitted photoelectrons
What does point P represent?
- ProProfs]( "The graph below shows the relationship between the frequency of radiation incident on a photosensitive surface and the maximum kinetic energy of the emitted photoelectrons
What does point P represent?")
The graph below shows the relationship between the frequency of radiation incident on a photosensitive surface and the maximum kinetic energy of the emitted photoelectrons What does point P represent?- A.
Fundamental frequency
- B.
Photoelectron frequency
- C.
Photon escape frequency
- D.
Threshold frequency
- 8.The work function of a particular photo-emissive material is 4.0 eV. If photons with 16 eV of energy are incident on the material, what would be the maximum kinetic energy of the ejected photoelectrons?
- A.
0.25 eV
- B.
4.0 eV
- C.
12 eV
- D.
20. eV
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