A wave packet can represent a quantum particle because:
A)it has the localised nature of a particle.
B)the group velocity is identical to the speed of the particle.
C)the waves that compose the packet can show interference and diffraction.
D)of all of the above.
E)of only (a) and (b) above.

Question

Quizplus · Accepted Answer

All of the given options are true for a wave packet representing a quantum particle. 
A) A wave packet has a localized nature like a particle. This means it has a well-defined position as a particle does.
B) The group velocity of the wave packet is identical to the speed of the particle. This means the velocity of the particle can be calculated using the group velocity of the wave packet.
C) The waves that compose the packet can show interference and diffraction, which is a characteristic of all waves. The superposition of these waves creates a wave packet that represents a single particle.

A Wave Packet Can Represent a Quantum Particle Because