• stopping potential or cut off potential
    Cut-off potential  : The minimum negative potential required to just make the photo electric current of the plate is zero, defined as stop...
  • Laws of photo electric effect
    Laws of photo electric effect  :  The laws of photo electric effect are---- The number of electrons emitted per second will be directly...
  • Negative temperature
    Negative temperature  :  A part from the system i.e., the nucleus of a solid can have a negative temperature. This sub-system is considere...