If a microscopic particle's uncertainty in velocity is reduced,
A) its uncertainty in position must increase enough to satisfy the uncertainty principle.
B) its uncertainty in position must remain unchanged.
C) its uncertainty in position must decrease enough to satisfy the uncertainty principle.

Question

Quizplus · Accepted Answer

According to Heisenberg's uncertainty principle, the product of the uncertainties in position and velocity of a particle is inversely proportional. Therefore, if the uncertainty in velocity is reduced, the uncertainty in position must increase to satisfy the principle.

If a Microscopic Particle's Uncertainty in Velocity Is Reduced