If the position of an electron is measured very precisely there is an uncertainty in measuring its
A) kinetic energy.
B) momentum.
C) potential energy.
D) thermal energy.
E) None of the other answers is correct.

Question

Quizplus · Accepted Answer

This is a direct application of the Heisenberg Uncertainty Principle, which states that the more precisely the position of a particle is known, the less precisely its momentum can be determined. The uncertainty in momentum is directly proportional to the uncertainty in position. Therefore, if the position of an electron is measured very precisely, there will be an uncertainty in measuring its momentum.

If the Position of an Electron Is Measured Very Precisely