Question

What is work function and threshold frequency?

Answer 1

1. Work function is the term used to describe the bare minimum energy required for electron photo-emission. The material has an impact on the work function.
2. The threshold frequency is the lowest value of the light frequency required to provide the work function.
3. The work function is given as,

$E=h{f}_o$.

Where $E$ is the work function, $h$ is Planck’s constant and $f_o$ is the threshold frequency.