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Why does violet light eject electrons from a certain photosensitive surface whereas red light has no effect on that surface?
Violet light has higher energy photons compared to red light. This higher energy allows violet light photons to transfer enough energy to electrons in the photosensitive surface to eject them, a process known as the photoelectric effect. Red light photons do not have enough energy to overcome the work function of the surface and therefore cannot eject electrons.
What happens to electrons if photon frequency is below threshold?
If the photon frequency is below the threshold frequency, the electrons do not have enough energy to be emitted from the material's surface, and no photoelectric effect occurs. The electrons will not be ejected and will remain bound to the material.
What is a photosensitive surface?
A photosensitive surface is a material or medium that reacts to light by undergoing a physical or chemical change. It is commonly used in photography and imaging technologies to capture and record images. When exposed to light, a photosensitive surface produces a latent image that can be developed to create a visible image.
What effects did scientists originally think that the intensity of light shining on a photosensitive surface would have on electrons ejected from that surface?
Scientists originally thought that the intensity of light would affect the number of electrons ejected, but not their energy. They believed that increasing the intensity would only result in more electrons being emitted from the surface, without impacting their kinetic energy.
Why for a particular metal electrons are emitted only when the frequency of the incident radiation is greater than a certain value?
Electrons are emitted from a metal surface when the energy of the incident photons is great enough to overcome the work function of the metal. This minimum energy required is equivalent to a certain threshold frequency, known as the threshold frequency. Electrons can only be emitted when the frequency of the incident radiation is greater than this threshold frequency because lower frequency photons do not possess enough energy to overcome the work function and release electrons from the metal surface.
Why does violet light eject electrons from a certain photosensitive surface whereas red light has no effect on that surface?
Violet light has higher energy photons compared to red light. This higher energy allows violet light photons to transfer enough energy to electrons in the photosensitive surface to eject them, a process known as the photoelectric effect. Red light photons do not have enough energy to overcome the work function of the surface and therefore cannot eject electrons.
What happens to electrons if photon frequency is below threshold?
If the photon frequency is below the threshold frequency, the electrons do not have enough energy to be emitted from the material's surface, and no photoelectric effect occurs. The electrons will not be ejected and will remain bound to the material.
What is a photosensitive surface?
A photosensitive surface is a material or medium that reacts to light by undergoing a physical or chemical change. It is commonly used in photography and imaging technologies to capture and record images. When exposed to light, a photosensitive surface produces a latent image that can be developed to create a visible image.
What effects did scientists originally think that the intensity of light shining on a photosensitive surface would have on electrons ejected from that surface?
Scientists originally thought that the intensity of light would affect the number of electrons ejected, but not their energy. They believed that increasing the intensity would only result in more electrons being emitted from the surface, without impacting their kinetic energy.
Why for a particular metal electrons are emitted only when the frequency of the incident radiation is greater than a certain value?
Electrons are emitted from a metal surface when the energy of the incident photons is great enough to overcome the work function of the metal. This minimum energy required is equivalent to a certain threshold frequency, known as the threshold frequency. Electrons can only be emitted when the frequency of the incident radiation is greater than this threshold frequency because lower frequency photons do not possess enough energy to overcome the work function and release electrons from the metal surface.
What is the emission of electrons from a metals surface when light of a certain frequency shines on it?
photoelectric effect
What is the phenomenon in which electrons are emitted from a metals surface when light of a certain frequency shines on it?
Photoelectric phenomenon
Why is it not possible to get electrons from metal even when light of high frequency fall on its surface?
High-frequency light can cause electrons to be emitted from a metal's surface through the photoelectric effect. However, if the energy of the photons is still not high enough to overcome the metal's work function (the minimum energy needed to release an electron), then electrons cannot be emitted.
Shutter speed is associated with what?
It is associated with the length of time a photosensitive surface is exposed to light.
What is threshold frequency?
Threshold frequency is the minimum frequency of light required to eject electrons from a metal surface in the photoelectric effect. Below this frequency, no electrons are emitted regardless of intensity. It is a characteristic property of each metal and is used to determine the work function of the metal.
What device gives off electrons when light shines on a metal surface?
There is the photoelectric effect, which is the process that emitts electrons from a metals surface when light of a certain frequency shines on the surface. In the metal, the nuclei are surrounded by electrons, so when the incoming electrons strike the surface, they pull apart from the electrons of the metal because of how like charges detract from each other.
How is the threshold frequency related to work function?
The threshold frequency is the minimum frequency of light required to eject electrons from a metal surface (photoelectric effect). The work function is the minimum energy needed to remove an electron from the metal surface. The threshold frequency is directly related to the work function through the equation E = hf, where E is the energy, h is Planck's constant, and f is the frequency.
