use the formula E=hv where v is the threshold frequency.
however, the binding energy is in kJ per mol. convert it into J per atom.
178kJ times 1000 = 178000 J and then divide by Avogadro's number (6.022*10E23)
after that u just plug the number in equation wher h is planck's constant (6.626*10E-34 J*S) and solve for v (frequency)
this will definitely work.
Threshold energy is the energy level where some chemical/physical action happens. For instance water boils at 100 deg C the water molecule attains enough (kinetic) energy it can escape from the rest of the pull of the water molecules. It can be used other context as well e.g. there enough electrostatic energy build up in the clouds, a lightning occur. This is the threshold energy.
Binding energy. and some is even stored in particles, such as the neutron which has a half-life of about ten minutes before it disintegrates with the release of energy.
IR: longer wavelength, lower frequency, lower energy per photon.Visible: medium wavelength, medium frequency, medium energy per photon.UV: shorter wavelength, higher frequency, higher energy per photon.
if wave amplitudes are equal ,will high frequency waves carry more or less energy than low frequency waves
Wavelength and frequency are inversely proportional.
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.
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.
It doesn't, and that's the whole big mysterious fact about the photoelectric effect that was standing Physics on its ear about 100 years ago. It doesn't matter how bright the light is, there's no photoelectric effect if the light is below the threshold frequency. And if it's above the threshold frequency, it doesn't matter how dim the light is, those electrons come streaming off of the surface of the target.
Threshold frequency refers to the minimum frequency of incident light required to eject electrons from the surface of a metal in the photoelectric effect. Electrons will only be emitted if the frequency of light is equal to or greater than the threshold frequency, as lower frequencies do not possess sufficient energy to overcome the work function of the metal.
Einstein used Planck's theory of quantization to explain the photoelectric effect by proposing that light is quantized into packets of energy called photons. These photons have energy proportional to their frequency, and when light with frequency below the threshold frequency interacts with a metal surface, no electrons are emitted. Above the threshold frequency, each photon can transfer enough energy to overcome the work function of the metal, causing electrons to be emitted.
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.
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.
No, the photoelectric effect only occurs when the frequency of incident light is equal to or greater than the threshold frequency. Below the threshold frequency, photons do not possess enough energy to eject electrons from a material.
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.
Threshold frequency is the minimum frequency of light required to eject an electron from a metal surface, while work function is the minimum energy required to remove an electron from the metal. The threshold frequency is directly related to the work function by the equation E = hf, where E is the energy required, h is Planck's constant, and f is the frequency of the incident light.
The existence of a threshold frequency below which no electrons were emitted. The direct proportionality between the frequency of incident light and the kinetic energy of emitted electrons. The instantaneous emission of electrons once the threshold frequency was surpassed, rather than a delayed response as would be expected in a classical wave model.
The graph paper for the photoelectric effect does not begin from the origin because there is a threshold frequency required to eject electrons. Below this threshold frequency, no electrons are emitted, so there is a minimum value on the x-axis. Electrons are only emitted once the incident light reaches a certain energy level (threshold), causing the emission of electrons. This energy level is depicted by the non-zero intercept on the x-axis of the graph paper.