The threshold frequency is defined as the minimum frequency of incident radiation below which the photoelectric emission is not possible completely. irrespective of the intensity of incident radiation.

For a light of frequency; \(\gamma > \gamma_{th}\), photoelectric current is proportional to the intensity of light. For any given material, there is some minimum-energy frequency, which is the threshold frequency. Below is the emission of photoelectrons stops completely, irrespective of the intensity of incident light.

Threshold frequency, ν 0 is the minimum frequency which a photon must possess to eject an electron from a metal. It is different for different metals. When a photon of frequency 1.0 × 10 15 s − 1 was allowed to hit a metal surface, an electron having 1.988 × 10 − 19 J of kinetic energy was emitted. Calculate the threshold frequency of ...

It threshold frequency will be: View Solution. Q5. The work function of a photoelectric material is 3.3 eV

When the light of frequency 2 ν 0 (where ν 0 threshold frequency) is incident on a metal plate, the maximum velocity of electrons emitted is v 1. When the frequency of the incident radiation is increased to 5 ν 0, the maximum velocity of electrons emitted from the …

If ν 0 be the threshold frequency for the metal surface, then W = h ν 0 or ν 0 = W h = 3.31 × 10 − 19 6.62 × 10 − 34 = 0.5 × 10 15 = 500 × 10 12 H z Was this answer helpful?

Threshold frequency can be defined as the minimum frequency of light which causes the electrons to be emitted from a metal surface when the light falls on it.

Define the terms (i) 'cut-off voltage' and (ii) 'threshold frequency' in relation to the phenomenon of photoelectric effect. Using Einstein's photoelectric equations show how the cut-off voltage and threshold frequency for a given photosensitive material can be determined with the help of a suitable plot/graph.

The threshold frequency for a certain metal is v 0 when a certain radiation of frequency 2 v 0 incident on this metal surface maximum velocity of photo electrons emitted is 2 × 10 6 m/s, if radiation of frequency 3 v 0 is incident on the same metal surface, the maximum velocity of the photo electrons emitted (in m/s ) is :

The threshold frequency ν 0 for a metal is 7.0 × 10 14 s − 1. Calculate the kinetic energy of an electron emitted when a radiation of frequency ν = 1.0 × 10 15 s − 1 hits the metal. View Solution