Q4. Consider a spin-1/2 particle in the quantum state
|\psi (\beta ,\alpha ):|| where
0<=\beta <=\pi and
0<=\alpha <=2\pi . For which values of
(\delta ,\gamma )is the state
|\psi (\delta ,\gamma ):|| orthogonal to
|\psi (\beta ,\alpha ):|| ? (a)
(\pi +\beta ,\pi -\alpha )(b)
(\pi -\beta ,\pi -\alpha )(c)
(\pi +\beta ,\pi +\alpha )(d)
(\pi -\beta ,\pi +\alpha )Ans: 4. (d)