Question

What is the Threshold Frequency?

Answer 1

Threshold Frequency:

1. The threshold frequency is the lowest frequency below which the photoelectric effect does not occur.
2. The threshold frequency is defined as the lowest incident radiation frequency below which photoelectric emission is absolutely impossible regardless of the strength of the incident radiation.
3. It can be written as: $f=\raisebox{1ex}{$W$}\!\left/ \!\raisebox{-1ex}{$h$}\right.$ here $h$ is Planck's constant, $f$ is threshold frequency, and $W$ is work.
4. Its unit is $Hz\left(Hertz\right)$