Question

Difference between expactation value and eigen value

Answer 1

Answer:

The expectation value for an observable is equal to the average of all possible eigenvalues. The expectation value for an observable is a weighted average of the various eigenvalues.

Answer 2

Answer:

Notice that the expectation value of an eigenfunction state is simply the eigenvalue. If there are two different eigenfunctions with the same eigenvalue, then the eigenfunc- tions are said to be degenerate eigenfunctions