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Multiple choice
A spin in a magnetic field precesses at the Larmor frequency omega_L = gamma * B. For gyromagnetic ratio gamma = 5 and field strength B = 0.4 (hbar = 1), what is omega_L (which also equals the energy splitting Delta_E)?
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5.4 (= gamma + B)
1 (= gamma*B/2)
2
12.5 (= gamma / B)
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