17. In the polar coordinate (ρ,θ,Φ), a particle is described by the wave function φ(ρ,Φ)= . What is the probability that a measurement of L_z yields the value 2h for this particle?
(A)1/2
(B) 1/3
(C) 1/4
(D) 1/5
(E) 1/6.

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