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What are the eigenvalues for z component of angular momentum operator Lz? (m = magnetic quantum number)?

What are the eigenvalues for z component of angular momentum operator Lz? (m = magnetic quantum number)? Correct Answer Lz = mħ

Operating on spherical harmonics on Lz: Lz\(Y_m^l\) (θ, Φ) = mħ\(Y_m^l\)(θ, Φ), which yields eigenvalues of Lz = mħ for a given quantum mechanical system.

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