Question

For a spin-1/2 particle placed in a magnetic field B, the Hamiltonian is H =-yBS, =-@Sy, where S, is the
y-component of the spin operator. The state of the system at time t=0 is (y (t = 0)) =1+), where
S, I+) = +1+). At a later t, if S, is measured then what is the probability to get a value – ħ/2?

(a) cos(wt)
(d)sin^2(omega t/2)
(c)0
(b) sin^2(omega t)
​

Answer 1

Answer:

I don't know

please anyone help him

Answer 2

Answer: you can find as follows

Explanation: I Hope it helps