Uncertainty principle: If the accuracy in measuring the position of a particle increases, the accuracy in measuring its velocity will
A) increase.
B) decrease.
C) remain the same.
D) It is impossible to say since the two measurements are independent and do not affect each other.

Question

Quizplus · Accepted Answer

The uncertainty principle states that the product of the uncertainty in measuring the position and the uncertainty in measuring the momentum (which is related to velocity) of a particle must be greater than or equal to a constant value. Therefore, if the accuracy in measuring the position of a particle increases (which means the uncertainty in measuring position decreases), the uncertainty in measuring its momentum (or velocity) must increase. This means that the accuracy in measuring its velocity will decrease.

Uncertainty Principle: If the Accuracy in Measuring the Position of a Particle