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What is the relation between number of photons incident on a metal surface and number of electrons ejected out of the metal is there any formula for it?
Suryalawder
The first thing you have to know ... maybe the most important thing about the whole situation ... is that
unless EACH of your photons carries enough energy, you won't dislodge ANY electrons, no matter HOW MANY
photons you throw at the metal.
That means that for any given metal, there is a certain frequency (wavelength / color) below which
the incident radiation won't pry any electrons loose, no matter how intense it is.
This is called the 'photoelectric effect'. I think it was the subject of the paper that won Einstein his first Nobel,
about 100 years ago. He showed it to be a powerful argument for the notion of light as particles.
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∙ 14y ago
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When a clean surface of potassium metal is exposed to blue light electrons are emitted if the intensity of the blue light is increased what will also increase?
i have the same question on my test haha for me, the answers are: a) The number of electrons ejected per second b) the maximum kinetic energy of the ejected electrons c) the threshold frequency of the ejected electrons d) the time lag between the absorption of blue light and the start of emission of the electrons e) none of these A the number of electrons ejected per second,,,,, correct answer
Electrons ejected in the photoelectric effect are called?
Photo electrons. So current due to these photo electrons is named as photo electric current.
What is the difference between ultra violet alpha and ultra violet beta rays?
Ultraviolet is low energy light. Alpha particles are helium nucleii ejected from the nucleus of a heavy element during radioactive decay. Beta particles are electrons (or positrons) ejected from the nucleus of an element during radioactive decay.There is no such thing as "ultra violet alpha and ultra violet beta" rays.
Sodium is irradiated for 2 seconds with infrared light and no electrons are ejected The same metal is irradiated for 2 seconds with ultraviolet light and thousands of electrons are emitted?
Its because the electrons need a minimum amount of energy to come out of the material. This energy is called the threshold energy.
Red light CANNOT cause an electron to be ejected from a potassium atom because of?
the energy of red light is not sufficient to eject electrons from the valence shell of the potassium atom.
When a clean surface of potassium metal is exposed to blue light electrons are emitted if the intensity of the blue light is increased what will also increase?
i have the same question on my test haha for me, the answers are: a) The number of electrons ejected per second b) the maximum kinetic energy of the ejected electrons c) the threshold frequency of the ejected electrons d) the time lag between the absorption of blue light and the start of emission of the electrons e) none of these A the number of electrons ejected per second,,,,, correct answer
What are photo-electrons?
An electron ejected from the surface of a material by the photoelectric effect
Electrons ejected in the photoelectric effect are called?
Photo electrons. So current due to these photo electrons is named as photo electric current.
In the phenomenon known as the Doppler Effect electrons are ejected when light shines on certain substances?
The Doppler Effect is the change in the frequency of the sound you hear when a car sounding its horn passes you.When the electrons at the surface of an object absorb incident light sufficient for them to escape the surface this is known as the photoelectric effect.
In the phenomenon known as the Doppler Effect electrons are ejected when light shines on the certain substances?
The Doppler Effect is the change in the frequency of the sound you hear when a car sounding its horn passes you.When the electrons at the surface of an object absorb incident light sufficient for them to escape the surface this is known as the photoelectric effect.
In the phenomenon known as the Doppler Effect electrons are ejected when light shines on certain substances.?
The Doppler Effect is the change in the frequency of the sound you hear when a car sounding its horn passes you.When the electrons at the surface of an object absorb incident light sufficient for them to escape the surface this is known as the photoelectric effect.
How is the relationship between protons and alpha particles similar to the relationship between beta particles and electrons?
An Alpha Particle is a fast, bare Helium nuclei composed of two protons, two neutrons, and no electrons, that is ejected at high velocity from a decaying nuclei. A Beta Particle is an electron or positron, ejected at extremely high velocity from a decaying nuclei. Both alpha particles and protons are Bosons. Both beta particles and electrons are Leptons. Their relationships are similar because the electron and proton are both components of atoms. The beta and alpha particles are both fragments ejected from decaying atoms.
Electrons are ejected from atoms in cells when organisms are exposed to?
Gamma Rays and X rays
What atom particles are ejected and travel down the transport chains in the light reaction?
electrons
Why the wave model for radiation does not account for the photoelectric effect?
Predictions of the wave model: Energy of light was dependent on the amplitude of the light wave, which was manifested as the brightness of the light. Higher amplitude (brighter) light would cause the ejected electrons to be more energetic. Colour of light was dependent on the frequency of the light but frequency had no bearing on the energy of the ejected photons. Predictions of the photon model: Both the energy of light and the colour of light was dependent on the frequency of the photons. Higher frequency would cause the the ejected electrons to be more energetic. The number of photons was manifested as the brightness of the light. Higher number of photons (brighter) light would cause the ejected electrons to be more numerous (higher current). Observations from the photoelectric effect experiment: Ejected electron energy was directly related to the frequency of the light and brighter light resulted in higher current. These observations were explained by the photon model and could not be explained with the wave model.
What ejects electrons?
Electrons may be ejected as Beta particles from an atom undergoing radioactive decay. Electrons may also be ejected in high-energy particle collisions such as those produced in a cyclotron. Electrons may also be displaced from an atom by extremes of high temperature when a plasma is formed, by thermionic emission; or by light, during the interaction with a photon of sufficient energy.
The photoelectric effect states that electrons are ejected from a piece of metal?
B: When you shine a particular color of light on it.
