13. The state y= V-1 t Vt =V is a linear combination ofthree orthonormal eigenstates of the opera- tor O corresponding to eigenvalues-1, 1 and 2. What is the expectation value ofO for this state? 2 (a) (b) (c)1 (d) 3 [BHU 2012] u na fnctions could represent the radial wave function for an electron in an atom? (rs the