?

Waves and Sounds

Free Version

Upgrade subject to access all content

Easy

Amplitude Superposition: Reflected Wave Pulses

WAVES-3FEMKK

Vern Hart. Created for Albert.io. Copyright 2016. All rights reserved.

A wave pulse is sent down a wire which is fastened at one end. The relative amplitude of the wave is +A as it lies above the wire. When the pulse reaches the end of the wire, it reflects and travels the opposite direction, only to meet up again with a second pulse of amplitude +A. When these two waves meet, interference occurs.

Which of the following represents the relative amplitude of the waves during superposition?

A

+A

B

0

C

-A

D

2A