Photoelectric Effect & wave particle duality

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

What color of light has the greatest energy per photon?

• Red

• Green

• Blue

• Violet

Tags

NGSS.HS-PS4-1

A discrete quanta of energy of EM radiation is called a:

• Photon

• Wave

• Planck constant

• Particle

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

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

One photon interacts with only one electron. True or false?

• True

• False