Happens with maximum opening angle-larmor precession

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Consider a particle of spin 1/2 in a magnetic field B= (0, 0,B0). If the initial spin state of the electron is X+ = (1,0), then the Larmor precession:
(1) happens with maximum frequency.
(2) does not happen.
(3) happens with maximum opening angle ( in our notation).
(4) other (explain).

Reference no: EM13536855

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