What is group velocity and phase velocity? Show that the group velocity of particle is equal to the velocity of the particle?
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The definition of group velocity is that any particle is totally equal to the total relativistic energy’s derivative with respect to the momentum that is relative.
The phase and group velocities are a function of the Compton and de.Broglie Wavelenghts of different particles.
Some people confuse group and phase velocities and use both the definitions interchangeably.
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GROUP VELOCITY:-
When a number of waves of slightly different wavelengths and velocities travel together in a medium the observed velocity of this group of waves is called the Group velocity. Such a group of waves is called a wave packet.
PHASE VELOCITY:-
The velocity with which a wave travels through a medium is known as phase velocity or wave velocity.
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