alleryHeisenberg's uncertainty principle relates the uncertainties in position and momentum as
A$\Delta x \cdot \Delta p \ge h/(4\pi)$
B$\Delta x = h \cdot \Delta p$
C$\Delta x \cdot \Delta p \le h$
D$\Delta x \cdot \Delta p = 0$
Answer & Solution
Correct answer: A. $\Delta x \cdot \Delta p \ge h/(4\pi)$
$\Delta x \cdot \Delta p \ge \hbar/2 = h/(4\pi)$.
Position and momentum cannot both be known to arbitrary precision — a fundamental limit, not an experimental shortcoming.
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