Hi all, I'm doing a practice question in which we have a hydrogen atom in the state:(adsbygoogle = window.adsbygoogle || []).push({});

[tex]\psi = (2\psi_{100} + \psi_{210} + \sqrt{2}\psi_{211} + \sqrt{3}\psi_{21 -1})/\sqrt{10}[/tex]

It says that, now a measurement is taken and we find the angular momentum variables to be L = 1 and L_z = 1. The question is: immediately after the measurement, what is the wave function?

Now, I thought that we definitely observedonly[itex]\psi_{211}[/itex] here, because that is the only one with these values. So, I thought that collapses the wave function to this eigenstate, and it basically stays there.

However, it appears I'm wrong. The answer I have says that there's now a new wave function comprised of all three of the L = 1 states, and they do a bit of math to figure out their coefficients.

Can anyone help?

Thanks!

PS: I never found out an answer to this question, if anyone could help me here.

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# Collapse of wave function question

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