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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?
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.
What else can I help you with?
What will happen if monochromatic light is shining on the alkali metal and the cesium is just above the threshold frequency?
If monochromatic light is shining on an alkali metal and cesium is just above the threshold frequency, electrons in the cesium atoms will be ejected in a process called the photoelectric effect. These ejected electrons will have kinetic energy equal to the difference between the energy of the incident photon and the work function of the metal. The photoelectrons will be emitted instantaneously.
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.
How ions knock off electrons from atoms?
When ions collide with atoms, they transfer energy through collisions with the outer electrons of the atom. This transfer of energy can disrupt the balance of the electrons in the atom, causing an electron to be knocked off or ejected. This process is known as ionization and can result in the creation of new ions.
How Oxygen ionizes by losing electrons?
Oxygen can ionize by losing electrons to form a positively charged ion. This can occur when an oxygen atom gains enough energy to overcome the attraction of its electrons, causing one or more electrons to be ejected from the atom. The resulting oxygen ion will have a positive charge due to the loss of negatively charged electrons.
What is the relationship between the kinetic energy of ejected electrons and the intensity of incident light in the photoelectric effect?
In the photoelectric effect, the kinetic energy of ejected electrons is directly proportional to the intensity of the incident light. This means that higher intensity light results in higher kinetic energy of the ejected electrons.
What occurs when light strikes a metal and electrons are released?
When light strikes a metal, it transfers energy to the electrons in the metal, causing them to be ejected in a process known as photoelectric effect. These ejected electrons are called photoelectrons and can be used in applications such as photovoltaic cells and photoemission spectroscopy. The energy of the ejected electrons is proportional to the frequency of the incident light.
What is the frequency in photoelectric effect?
In the photoelectric effect, the frequency of incident light determines the energy of the ejected electrons from a material. Electrons are only emitted from the material when the frequency of the incident light is greater than the threshold frequency, which is unique to each material.
What happens to electrons in the photo electric effect?
Electrons are ejected from a metal surface when it is exposed to light of sufficient energy. This phenomenon is known as the photoelectric effect. The energy of the incident light is absorbed by the electrons, causing them to be emitted from the metal surface.
What is ejected when light strikes a metal surface?
Electrons are ejected from a metal surface when light strikes it. This phenomenon is known as the photoelectric effect. The ejected electrons are called photoelectrons.
What will happen if monochromatic light is shining on the alkali metal and the cesium is just above the threshold frequency?
If monochromatic light is shining on an alkali metal and cesium is just above the threshold frequency, electrons in the cesium atoms will be ejected in a process called the photoelectric effect. These ejected electrons will have kinetic energy equal to the difference between the energy of the incident photon and the work function of the metal. The photoelectrons will be emitted instantaneously.
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 determines if electrons are ejected from the surface?
The ejection of electrons from a surface is determined by the energy of the incoming photons or particles. If the energy is high enough, it can overcome the binding energy of the electrons in the material, causing them to be ejected.
What does light produce in a photoelectric effect?
In the photoelectric effect, light produces electrons when it strikes a material surface. The energy of the incident light is transferred to the electrons, causing them to be ejected from the material.
What does incident light that falls on an object do to the electrons in the atoms of an object?
Incident light can excite electrons in the atoms of an object, causing them to move to higher energy levels or even be ejected from the atom as photoelectrons. This can lead to various interactions such as absorption, reflection, or transmission of light depending on the material properties and the wavelength of the incident light.
How does the light intensity affect the photoelectric current?
Increasing light intensity results in more photons being incident on the photoelectric material, leading to more electrons being ejected, thus increasing the photoelectric current.
Does the photoelectric effect occur when light shines on metal?
Yes, the photoelectric effect occurs when light shines on metal. This phenomenon involves the emission of electrons from a material when it is exposed to light. The energy of the photons in the incident light must be sufficient to overcome the work function of the metal in order for electrons to be ejected.
