# Awesome Quiz On Photoelectric Effect

8 Questions | Total Attempts: 1521  Settings  .

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• 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?
• 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