Here is another True or False question from the same practice test.
Since the expectation of the momentum operator <p>=<n|pn> is zero for an energy eigen state of the harmonic oscillator, a measurement of the momentum will give zero every time (True or False).
The Attempt at a Solution
This question sounds very false to me, since an expectation value implies a probability and not an absolute. However, I'm thinking it might be a trick question...