Applied Physics I: Chapter 7: Quantum Mechanics
Laws goverining the photo electric effect
The experimental observations on photoelectric effect may be summarized as follows, which are known as the fundamental laws of photoelectric emission.
LAWS GOVERNING THE
PHOTO ‒ ELECTRIC EFFECT
The
experimental observations on photoelectric effect may be summarized as follows,
which are known as the fundamental laws of photoelectric emission.
1.
For a given photo sensitive material, there is a minimum frequency called the
threshold frequency, below which emission of photoelectrons stops completely,
however great the intensity may be.
2.
For a given photosensitive material, the photo electric current is directly
proportional to the intensity of the incident radiation, provided the frequency
is greater than the threshold frequency.
3.
The photoelectric emission is an instantaneous process. i.e. there is no time
lag between the incidence of radiation and the emission of photo electrons.
4.
The maximum kinetic energy of the photo electrons is directly proportional to
the frequency of incident radiation, but is independent of its intensity.
Applied Physics I: Chapter 7: Quantum Mechanics : Tag: Applied Physics : - Laws goverining the photo electric effect
Applied Physics I: Chapter 7: Quantum Mechanics
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