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Flashcards on Photoelectric Effect
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What is the Photoelectric Effect?
The emission of electrons from a material when light shines on it.
Who discovered the Photoelectric Effect?
Albert Einstein
What is the threshold frequency in the context of the Photoelectric Effect?
The minimum frequency of light required to eject electrons from a material.
What happens to the kinetic energy of photoelectrons as the frequency of incident light increases?
The kinetic energy of photoelectrons increases.
What is the stopping potential in the context of the Photoelectric Effect?
The voltage required to stop the flow of photoelectrons.
What is the photoelectric current?
The current of ejected photoelectrons when light shines on a material.
What is the work function of a material?
The minimum amount of energy required to remove an electron from the material's surface.
What is the equation that describes the Photoelectric Effect?
E = hf - Φ
What does 'E' represent in the equation E = hf - Φ?
Energy of the ejected electron
What does 'f' represent in the equation E = hf - Φ?
Frequency of the incident light
What does 'Φ' represent in the equation E = hf - Φ?
Work function of the material
How does the intensity of light affect the number of ejected photoelectrons?
The intensity of light determines the number of ejected photoelectrons.
What is the relationship between the wavelength of light and the Photoelectric Effect?
The wavelength of light is inversely proportional to the energy of the ejected photoelectrons.
What are some practical applications of the Photoelectric Effect?
Solar cells, photodiodes, and photoelectric sensors.
What phenomenon did the Photoelectric Effect help explain?
The particle-like behavior of light, known as photons.
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What is the Photoelectric Effect?
The emission of electrons from a material when light shines on it.
The reflection of light from a material.
The scattering of light by a material.
The refraction of light as it passes through a material.
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Who discovered the Photoelectric Effect?
Albert Einstein
Isaac Newton
Thomas Edison
Alexander Graham Bell
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What is the work function of a material?
The voltage required to stop the flow of photoelectrons.
The minimum amount of energy required to remove an electron from the material's surface.
The current of ejected photoelectrons when light shines on a material.
The minimum frequency of light required to eject electrons from a material.
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What happens to the kinetic energy of photoelectrons as the frequency of incident light increases?
The kinetic energy of photoelectrons decreases.
The kinetic energy of photoelectrons increases.
The kinetic energy of photoelectrons remains the same.
The kinetic energy of photoelectrons depends on the intensity of light.
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What is the equation that describes the Photoelectric Effect?
E = mc^2
E = hf - Φ
F = ma
PV = nRT
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How does the intensity of light affect the number of ejected photoelectrons?
The intensity of light determines the number of ejected photoelectrons.
The intensity of light has no effect on the number of ejected photoelectrons.
The intensity of light affects the wavelength of the incident light.
The intensity of light affects the work function of the material.
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What is the relationship between the wavelength of light and the Photoelectric Effect?
The wavelength of light is directly proportional to the energy of the ejected photoelectrons.
The wavelength of light is inversely proportional to the energy of the ejected photoelectrons.
The wavelength of light has no effect on the energy of the ejected photoelectrons.
The wavelength of light affects the threshold frequency of the material.
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What is the stopping potential in the context of the Photoelectric Effect?
The minimum frequency of light required to eject electrons from a material.
The voltage required to emit photons from a material.
The voltage required to stop the flow of photoelectrons.
The maximum intensity of light that can be used in the Photoelectric Effect.
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What is the threshold frequency in the context of the Photoelectric Effect?
The minimum frequency of light required to emit photons from a material.
The minimum frequency of light required to eject electrons from a material.
The maximum intensity of light that can be used in the Photoelectric Effect.
The voltage required to stop the flow of photoelectrons.
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What phenomenon did the Photoelectric Effect help explain?
The wave nature of light.
The refraction of light.
The particle-like behavior of light, known as photons.
The interference of light waves.
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