Consider a particle of mass m moving in a one-dimensional box under the potential V = 0 for 0 ≤ x ≤ a and V = ∞ outside the box. When the particle is in its lowest energy state, the average momentum (< px >) of the particle is
1
< px > = 0
2
\(=\dfrac{h}{a}\)
3
\(=\dfrac{h}{2a}\)
4
\(=\dfrac{h}{2{\pi}a}\)