voko said:5eV is energy, and 150 nm can also be converted to the energy of the photon. The diff between these two gives you the energy of the electron.
xiphoid said:But I am suppose to find the velocity of the electron?
voko said:The excess energy becomes kinetic energy.
The minimum velocity of emitted electron refers to the minimum amount of kinetic energy required for an electron to be emitted from a material, also known as the work function. This is dependent on the material's properties and can vary for different materials.
Finding the minimum velocity of emitted electron is important in understanding the behavior of electrons in different materials. It also has practical applications in fields such as semiconductor technology and energy conversion.
The minimum velocity of emitted electron can be calculated using the equation mv2/2 = φ, where m is the mass of the electron and φ is the work function of the material. This equation relates the kinetic energy of the electron to the work function.
The minimum velocity of emitted electron is affected by the work function of the material, as well as the energy of the incident photon or particle. It can also be affected by external factors such as temperature and electric fields.
The minimum velocity of emitted electron can be measured using various techniques such as photoelectric effect experiments, where the kinetic energy of emitted electrons is measured and used to calculate the work function. Other methods include scanning tunneling microscopy and field emission microscopy.