APP2 Photoelectric Effect

A particle of light is called a...

• Photoelectron

• Photon

• Proton

• Electron

Tags

NGSS.HS-PS4-3

The only way to increase the number of photoelectrons emitted is by increasing the _________ of the light

• Intensity

• Wavelength

• Frequency

• Energy

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-4

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.

Tags

NGSS.HS-PS4-4

The 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.

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-4

This image is an illustration of

• photoelectric effect

• Dalton's atomic theory

• Bohr model

• Quantum mechanical model

Tags

NGSS.HS-PS4-3

Does high-frequency or low frequency light cause the ejection of a greater number of electrons from a metal surface?

• only high frequency

• only low frequency

• both of them

• doesn't depend to frequency

Tags

NGSS.HS-PS4-4

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.

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-4

Photoelectric effect provides the evidence for the ______ nature of radiation.

• dual

• wave

• particle

• electromagnetic

Tags

NGSS.HS-PS4-3

Light of a given wavelength is used to illuminate the surface of a metal. However, no photoelectrons are emitted. In order to cause electrons to be ejected, light of __________ should be used.

• lower energy

• higher intensity

• shorter frequency

• higher frequency

Tags

NGSS.HS-PS4-4

What is the energy, in eV, of a photon that has a wavelength of 620 nm?

• 1eV

• 2eV

• 3eV

• 4eV

Tags

NGSS.HS-PS4-1