Understanding the Photoelectric Effect Quiz

Who conducted an experiment with a photocell and observed that increasing the intensity of UV light did not result in faster electrons?

• Max Planck

• Albert Einstein

• Philip Leonard

• Heinrich Hertz

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What did Max Planck suggest as the solution to the problem of the black Body Curve not fitting in well with the wave theory?

• Energy is quantized

• Intensity increases infinitely

• Electrons are released by light

• Increasing the wavelength

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What is the term used for electrons released by light in the photoelectric effect?

• Neutrons

• Photoelectrons

• Protons

• Photons

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What is the relationship between the intensity of light and the number of electrons being released in the photoelectric effect?

• Intensity increases the energy of electrons

• Intensity increases the speed of electrons

• Intensity increases the number of photons

• Intensity decreases the number of electrons

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What is the term for the minimum frequency needed for an electron to be released in the photoelectric effect?

• Potential difference

• Work function

• Threshold frequency

• Kinetic energy

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112.45.a

What is the relationship between the energy of a photon and the energy of the released electron in the photoelectric effect?

• The energy of the photon is equal to the work function

• The energy of the photon is equal to the kinetic energy

• The energy of the photon contributes to the release of the electron

• The energy of the photon is unrelated to the release of the electron

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What does the slope of the graph representing the photoelectric effect energy-frequency relationship represent?

• Threshold frequency

• Work function

• Planck's constant

• Kinetic energy

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112.45.a

What is the y-intercept of the graph representing the photoelectric effect energy-frequency relationship?

• Kinetic energy

• Planck's constant

• Work function

• Threshold frequency

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112.45.a

What happens to the energy of the released electrons if the frequency of the photons is increased in the photoelectric effect?

• The energy of the electrons remains constant

• The energy of the electrons decreases

• The energy of the electrons becomes negative

• The energy of the electrons increases

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112.45.a

What is the term for the energy needed for an electron to be released from a material in the photoelectric effect?

• Work function

• Kinetic energy

• Threshold frequency

• Potential difference

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112.45.a