Consider a particle in a central potential with angular momentum operators \(L_x , L_y \), and\( L_z\) representing the components of the angular momentum vector \(\mathbf{L}\) . The total angular momentum operator is:

\(L^2 = L_x^2 + L_y^2 + L_z^2 \), and the corresponding eigenstates are labeled by the quantum numbers l and m . Which of the following statements is true regarding the commutation relations and the measurement of angular momentum?

1

\(L^2\) and \(L_z\) commute and both can be measured simultaneously.

2

\(L_x , L_y , and\ L_z\) can all be measured simultaneously. " id="MathJax-Element-106-Frame" role="presentation" style="position: relative;" tabindex="0">" id="MathJax-Element-126-Frame" role="presentation" style="position: relative;" tabindex="0">" id="MathJax-Element-3-Frame" role="presentation" style="position: relative;" tabindex="0">

3
\(L_x^2 , L_y^2 , and\ L_z^{988}\) commute and have the same eigenvalues.
4
The eigenvalues of \(L_z\) are independent of the total angular momentum quantum number l.
5
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