AP Physics 2mediummcq1 pt

According to the Heisenberg uncertainty principle, it is impossible to simultaneously know both the exact position and momentum of a particle. If the uncertainty in position is decreased, what happens to the uncertainty in momentum?

A.A) It decreases
B.C) It remains constant
C.D) It becomes zero
D.B) It increases

Explanation

Core Concept

The Heisenberg uncertainty principle states that Δx·Δp ≥ h/4π, where Δx is the uncertainty in position, Δp is the uncertainty in momentum, and h is Planck's constant. This means that if the uncertainty in position (Δx) decreases, the uncertainty in momentum (Δp) must increase to maintain the inequality.

Correct Answer

DB) It increases

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