What is the threshold frequency?

What is the threshold frequency?

The minimum frequency of light required to give the work function energy is called the threshold frequency. The work function can be calculated by: At the work function electrons will be ejected from the metal and have no energy. This means that they are stationary.

What is threshold frequency formula?

f = W/h where h is planck’s constant. Therefore if we know the work fucntion we can work out the threshold frequency but don’t forget to convert 3eV into J. 1eV = 1.6 x 10^{-19} J.

Does threshold frequency depend on the metal?

Threshold frequency is the minimum frequency of incident light which can cause emission of photo-electrons from the metal surface. Threshold frequency of particular surface depends on nature of its material.

What is the threshold frequency of iron?

For iron threshold frequency is 1.038×10 power 15 hz.

What is the threshold frequency of a metal How is the threshold frequency related to the work function?

The work function equals the threshold frequency times Planck’s constant. Planck’s constant is the proportionality constant that relates a photon’s frequency to its energy. Therefore, the constant is required to convert between the two quantities.

Why different metals would threshold frequencies?

Threshold frequency and work function Different metals have different work functions. This means it is easier to remove electrons from some metals than others. In turn, this means that the minimum frequency of photon needed to remove an electron from one metal can be lower than for another metal.

How can the threshold frequency for a metal surface be calculated?

The formula of threshold frequency is W= hv0. Here v0 is the photoelectric threshold frequency of the electromagnetic light rays, W is the work function of the metal body.

Is threshold frequency the same for all metals?

The precise shape of the surface of a metal will determine exactly where and how electrons move in the metal. Therefore, the threshold frequency and work function can vary.

Why do different metals require different threshold frequencies?

Which metal has higher threshold?

At zero stopping potential the frequency of incident radiation is more to metal A. Both the metals have the same stopping potential at different frequencies and this frequency is more than metal A. So, metal A has a higher threshold frequency. Thus, metal A has high threshold frequency.

How do you find the threshold frequency of a metal?

What is metal frequency?

The threshold frequency of a metal refers to the frequency of light that will cause an electron to dislodge from that metal. Light below a metal’s threshold frequency will not eject an electron. Light at the threshold frequency will dislodge the electron with no kinetic energy.

Threshold Frequency. The threshold frequency is the frequency of light that carries enough energy to dislodge an electron from an atom. This energy is entirely consumed in the process (see References 5).

What is threshold frequency?

Definition of threshold frequency : the minimum frequency of radiation that will produce a photoelectric effect

What is the threshold frequency of silver?

The photoelectric threshold frequency of silver is 1.04 × 1015 Hz.