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Electrons that are loosely bounded to the Atom, are probable to ejected by providing enough energy, that may be in the form of light(photon) of suitable energy or heat.
Protons and Neutrons are tightly bounded to the nucleus by Strong nuclear force.
and for a Light of any frequency it is unable to overcome to Strong nuclear force to eject it.
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According to the particle model of light certain kinds of light cannot eject electrons from metals because?
they do not possess enough energy in their individual particles, known as photons, to overcome the work function of the metal and eject electrons. The energy of the photons is directly related to their frequency, with higher frequency light having greater energy. This is why only light with sufficient energy, typically ultraviolet or higher frequency, can eject electrons from metals in the photoelectric effect.
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.
Could you use a highly intense beam of red light to eject electrons from the surface of a metal?
Yes, a highly intense beam of red light could potentially eject electrons from the surface of a metal through the photoelectric effect. The energy of the red light photons would need to be higher than the work function of the metal to overcome the binding energy of the electrons and eject them.
Will brighter light eject more electrons from a photosensitive surface than dimmer light of the same frequency?
Yes, brighter light will eject more electrons from a photosensitive surface than dimmer light of the same frequency. This is because brighter light carries more energy per photon, resulting in a higher probability of ejecting electrons from the surface.
What are the wavelengths for different metals in photoelectric effect?
The wavelengths of light required to cause the photoelectric effect depend on the specific metal. For example, for sodium, the threshold wavelength is around 590 nm, while for potassium it is around 420 nm. Different metals have different work functions, which determine the threshold wavelength needed to eject electrons from their surface.
According to the particle model of light certain kinds of light cannot eject electrons from metals because?
they do not possess enough energy in their individual particles, known as photons, to overcome the work function of the metal and eject electrons. The energy of the photons is directly related to their frequency, with higher frequency light having greater energy. This is why only light with sufficient energy, typically ultraviolet or higher frequency, can eject electrons from metals in the photoelectric effect.
It takes 254 kJmol to eject electrons from a certain metal surface What is the longest wavelength of light nm that can be used to eject electrons from the surface of this metal via the photoelectr?
To find the longest wavelength of light that can eject electrons from the metal surface, we need to use the equation E = hc/λ, where E is the energy required (254 kJ/mol), h is Planck's constant, c is the speed of light, and λ is the wavelength. Rearranging the equation to solve for λ, we find that the longest wavelength of light that can eject electrons is approximately 487 nm.
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.
Atoms of metals do what with electrons to become stable while atoms nonmetals tend to do what to electrons to become stable?
Choices: a) eject, retain B) lose, gain c) retain,gain d) gain, lose e) lose, retain
Why alkali metals used in photoelectric effect?
Alkali metals are used in the photoelectric effect because they have low ionization energies, making it easier for photons to eject electrons from their surface. This makes them efficient materials for producing a photoelectric effect. Additionally, alkali metals have a clean surface that allows for reliable and consistent results in experiments.
Is is true that the frequency of photons must be larger than a certain minimum value in order to eject electrons from the metal?
Yes, that is true. This minimum frequency is called the threshold frequency and is determined by the work function of the material. Photons with frequencies lower than the threshold frequency do not carry enough energy to eject electrons from the metal surface, even if the intensity of light is high.
Could you use a highly intense beam of red light to eject electrons from the surface of a metal?
Yes, a highly intense beam of red light could potentially eject electrons from the surface of a metal through the photoelectric effect. The energy of the red light photons would need to be higher than the work function of the metal to overcome the binding energy of the electrons and eject them.
Will brighter light eject more electrons from a photosensitive surface than dimmer light of the same frequency?
Yes, brighter light will eject more electrons from a photosensitive surface than dimmer light of the same frequency. This is because brighter light carries more energy per photon, resulting in a higher probability of ejecting electrons from the surface.
Does the intensity of light determine whether radiation will eject electrons?
No. The wavelength of the light determines whether an electron will be ejected from an atom.
Will bright blue light eject more electrons than dim light of the same frequency?
Yes, bright blue light will eject more electrons than dim light of the same frequency because the intensity of the light directly affects the number of electrons ejected in the photoelectric effect. Higher intensity light will provide more energy to the electrons, leading to more ejections.
What are the wavelengths for different metals in photoelectric effect?
The wavelengths of light required to cause the photoelectric effect depend on the specific metal. For example, for sodium, the threshold wavelength is around 590 nm, while for potassium it is around 420 nm. Different metals have different work functions, which determine the threshold wavelength needed to eject electrons from their surface.
What is the ability of light to eject an electron from a metal according to albert Einstein?
The ability of light to eject an electron from a metal is known as the photoelectric effect, as described by Albert Einstein. It occurs when photons of light transfer their energy to electrons in the metal, causing them to be ejected with a certain kinetic energy. This phenomenon provided evidence for the particle nature of light and helped establish the concept of photons.
