Teaching MPPSC Assistant Professor Mock Test Series 2025 Physical Sciences Quantum Mechanics

If \(\vec{L} \) is orbital angular momentum and \(\vec{S} \) is spin angular momentum, then \(\vec{L} \cdot \vec{S} \)  does not commute with?

1
\(S_z \)
2
\(L^2 \)
3
\(S^2 \)
4
\((\vec{L} + \vec{S})^2 \)
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