Practicing Success
Practicing Success
CUET Preparation Today
Consider a beam of electrons (each electron with energy $E_0$) incident on a metal surface kept in an evacuated chamber. Then: |
no electrons will be emitted as only photons can emit electrons electrons can be emitted but all with an energy, $E_0$ electrons can be emitted with any energy, with a maximum of $E_0-\phi(\phi$ is the work function electrons can be emitted with any energy, with a maximum of $E_0$ |
electrons can be emitted with any energy, with a maximum of $E_0$ |
When a beam of electrons of energy $E_0$ is incident on a metal surface kept in an evacuated chamber, electrons can be emitted with maximum energy $E_0$ (due to elastic collision) and with any energy less than $E_0$, when a part of incident energy of electron is used in liberating the electrons from the surface of metal. |
