In the photoelectric effect, if the incident photons have a wavelength that is larger than the threshold wavelength, _______.

no electrons will be emitted from the metal surface

electrons will be ejected from the metal surface

there will be photoelectric current

the kinetic energy of the ejected electrons increases

The 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.

The photoelectric effect is when:

One incident photon releases one electron from a metal.

Electrons collide inside a metal to release photons.

One incident metal electron releases one photon.

Photons are absorbed in to metal ions releasing electrons.

In an experiment, photoelectric effect is observed in metal A when light with frequency ( f ) falls on the metal. If the light frequency used in this experiment is doubled, the photoelectrons

Will be ejected with greater kinetic energy

Will be ejected as observed in the previous

Will be ejected with greater number of photoelectrons

A metal surface is struck with light of λ = 400 nm, releasing a stream of electrons. If the 400 nm light is replaced by λ= 300 nm light of the same intensity, what is the result?

Emitted electrons are more energetic

More electrons are emitted in a given time interval

Fewer electrons are emitted in a given time interval

Emitted electrons are less energetic

Chapter 17 - Photoelectric Effect

Authored by Sara Hensley

Physics

11th - 12th Grade

NGSS covered

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28 questions

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MULTIPLE CHOICE QUESTION

2 mins • 1 pt

This image is an illustration of

photoelectric effect

Dalton's atomic theory

Bohr model

Quantum mechanical model

Tags

NGSS.HS-PS4-3

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

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

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

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

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

dual

wave

particle

electromagnetic

Tags

NGSS.HS-PS4-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Use the graph to find the threshold frequency.

−12×10^-19 Hz

0 Hz

2×10¹⁵ Hz

4×10¹⁵ Hz

Tags

NGSS.HS-PS4-4

NGSS.HS-PS4-1

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Chapter 17 - Photoelectric Effect

This image is an illustration of

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

What is the best description of 'threshold frequency'?

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

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.

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

Use the graph to find the threshold frequency.

In the photoelectric effect, if the incident photons have a wavelength that is larger than the threshold wavelength, _______.

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?

What is the energy of a photon with a frequency of 5x10¹⁴ Hz? (you need to do calculation. You have enough time)

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Popular Resources on Wayground

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Chapter 17 - Photoelectric Effect

This image is an illustration of

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

What is the best description of 'threshold frequency'?

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

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.

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

Use the graph to find the threshold frequency.

In the photoelectric effect, if the incident photons have a wavelength that is larger than the threshold wavelength, _______.

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?

What is the energy of a photon with a frequency of 5x1014 Hz? (you need to do calculation. You have enough time)

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Physics

What is the energy of a photon with a frequency of 5x10¹⁴ Hz? (you need to do calculation. You have enough time)