Physics, asked by RRaaaaju, 10 months ago

distinguish between electron rest mass and effective mass​

Answers

Answered by guptabhumika722
8

Answer:

Free electron mass is the actual mass of an electron which is equal to kilograms. Effective mass is the mass that a particle seems to have when it is interacting with other particles.

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Answered by ShreyaNegi02
2

Answer:

Effective mass is under the infuence of periodic potential of crystal.

Explanation:

Effective mass of electron  differs from the free electron mass as the effective mass is the mass  of an electron under periodic potentials of a crystal while  rest mass of electron is the mass of free electron .

The effective mass impacts the spectrum of a particle by determining how it is connected to the crystal lattice.

Effective mass is given below

                            m'= \frac{d^{2}E }{dk^{2} }

where , m' = effective mass

              E =  energy

              K = wave vector

The electron's effective mass in the valance band is always negative.

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