# What is threshold frequency physics?

## What is threshold frequency physics?

Threshold frequency: Threshold frequency is the minimum frequency of the incident radiation below which photoelectric emission is not possible irrespective of the intensity of the incident radiation.

What is the formula of threshold frequency in photoelectric effect?

The photoelectric threshold frequency, symbolized by the Greek letter nu with subscript zero, ν0, is that frequency at which the effect is barely possible; it is given by the ratio of the work function symbolized by the Greek letter psi, ψ, to Planck’s constant (ν0 =…

### What is the formula of threshold energy?

Kmin = Kth = −Q MX + mx MX This equation is valid if the energies are much less than rest mass energies of the involved particles. In other words, the kinetic energy and momentum of particles can be treated classically, or non-relativistic.

How do you find the threshold frequency of energy?

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.

## What is threshold frequency definition?

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

What is threshold frequency formula?

What is the Formula of Threshold Frequency? Threshold frequency in photoelectric effect is the minimum frequency of electromagnetic radiation which is required for the phenomenon of photoelectric emission to occur from a metal surface. The formula of threshold frequency is W= hv0.

### What is the formula of threshold frequency?

It is a characteristic of electromagnetic radiation (light in case of photoelectric emission) and not metal. The formula of threshold frequency is W= hv0.

What is the formula for threshold frequency?

## What is the best description of 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). Therefore, the electron gets no kinetic energy at the threshold frequency and it is not released from the atom.

How do you calculate threshold frequency?

The equation for work function is W = hf so this is rearranged to. 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. f = (3 x 1.6 x 10^{-19})/(6.63 x 10^{-34})

### How does threshold frequency relate to work function?

While threshold frequency’s unit of measurement is hertz , work function can be measured in either joules or electron volts. Secondly, in order to apply threshold frequency, the frequency itself must be multiplied by the plank constant so the corresponding energy can be obtained.

What is threshold wavelength?

The threshold wavelength ( more commonly threshold frequency) is the wavelength/ frequency of a photon with just sufficient energy to liberate an electron.