Author Question: What happens to a particle's wave packet when a highly accurate position measurement is performed? ... (Read 65 times)

biggirl4568 · **on:** Jul 29, 2018

What happens to a particle's wave packet when a highly accurate position measurement is performed?

A) It suddenly makes a transition into a state of smaller uncertainty in position, with no change in its uncertainty in velocity.
B) It makes a gradual transition to a state of greater uncertainty in position but smaller uncertainty in velocity.
C) It makes a gradual transition to a state of smaller uncertainty in position and greater uncertainty in velocity.
D) It suddenly makes a transition into a state of greater uncertainty in position but smaller uncertainty in velocity.
E) It suddenly makes a transition into a state of smaller uncertainty in position and greater uncertainty in velocity.

Question 2

If the magnetic field of an electromagnetic wave is in the +x-direction and the electric field of the wave is in the +y-direction, the wave is traveling in the

A) xy-plane.
B) +z-direction.
C) -z-direction.
D) -x-direction.
E) -y-direction.