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Find the expression for the electron's resonance frequency using F = ma equation, in which
4лР
the polarization is P = -nef and the depolarization field would be E = --
3
(a) a
(b) w
(c) ²
(d) a
4ne²
3m
4πе²
m²
4дne²
=
=
=
3m
ne²
2m
=

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