IN PROGRESS 🌀 Quantum Phenomena

What is the equation for energy of a photon?

$$E=hf$$

What is the photoelectric effect?

When a photon of sufficient energy releases an electron from the surface of a metal

What is threshold frequency?

The minimum frequency of a photon needed to release an electron from the surface of a metal ($f_0$)

What is the work function?$\Phi$

The minimum energy of a photon required to release an electron from the surface of a metal ($\phi$)

What is the equation that relates work function and threshold frequency?

$$\phi=hf_0$$

What is symbol of work function?

$$\phi$$

What is symbol of threshold frequency?

$$f_0$$

According to classical wave theory why should threshold frequency not exist?

Because if light was a wave:

And you had a low energy intense light and you waited a sufficient amount of time an electron should be released- THIS IS NOT TRUE

Does intensity of light affect if an electron is released from a surface of a metal?

No only frequency does

What does intensity of light affect during photoelectric effect?

The number of electrons released per unit time from surface of a metal

What is the only thing that effects electron emission?

The frequency (energy) of a photon

$$E=hf$$

What is an example of frequency of EM radiation that can emit an electron from the surface of a metal?

UV light as it has enough energy

What type of interaction happens during the photo electric effect?

It is a one to one interaction between a photon and an electron (photon absorbed, electron emitted)