1. The problem statement, all variables and given/known data A parallel beam of electrons traveling in x- direction falls on a slit of width d. If after passing the slit, an electron acquires momentum py in the y direction then for a majority of electrons passing through the slit A. |py|d ≈ h B. A. |py|d > h C. |py|d < h D. |py|d >> h 2. Relevant equations Δx Δp = h/4π 3. The attempt at a solution I only know Hiesenberg uncertainty equation How to deal here with inequalities?