Nature Of Light|Properties Of Photon|Electron Emission|Threshold Frequency & Threshold Wavelength

Nature Of Light|Properties Of Photon|Questions|Electron Emission

Nature Of Light|Properties Of Photon|Questions|Electron Emission

Define threshold frequency

Explain threshold wavelength.

Electron Emission|Threshold Frequency & Threshold Wavelength|Einstein Relation|Graph Between K.E. & F|Questions

Electron Emission|Threshold Frequency & Threshold Wavelength|Einstein Relation|Graph Between K.E. & F|Questions

Explain the term threshold frequency?

A photon of frequency v causes photo electric emission from a surface with threshold frequency v_(0) . The de-Broglies wavelength (lambda) of the photo electron emitted is given by:

represents a graph of most energetic photoelectrons K_(max) (in eV) and frequency v for a metal used as cathod in photoelectrons experiment. The threshold frequency of light for the photoelectric emission from the metal is

For a photoelectric experiment graph between kinetic energy of fastest electron and frequency of light is plotted find threshold wavelength of metal.