Q4. Answer question completely and with much detail as possible. Need to understand the concept. A free electron is at rest in a uniform magnetic field B(t) = Bo cos(wt)k.(a) If time t=0, the electron is in a state with spin up in the x-direction, find the probability thatat a later time t=T, the electron is in a state with spin down in x-direction.(b) What minimum value of the magnetic field amplitude Bo, will result in the probability offlipping the spin in the z-direction to be equal to 1, i.e. a complete flip in S,?

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Answered: A free electron is at rest in a uniform…

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