# Reflection of Wave in Open Pipe

• Himal kharel
In summary, when a sound wave travels inside an open pipe, it is reflected back from the open end due to boundary conditions. This means that reflection is the only possible solution. When a pressure wave reaches the open end, the high pressure zone disperses, leaving a low pressure zone inside the pipe. This causes some air to be pulled back into the pipe, creating a reverse wave. This explanation helps to visualize the process of wave reflection in an open pipe.
Himal kharel
How is a wave reflected in a open pipe?

You mean a sound wave traveling inside a pipe getting reflected back from open end? Mathematically, what you get is a boundary conditions P=constant at the end, which means reflection is the only possible solution. But that might not help you. You probably want to picture what actually happens with the moving air.

Imagine a pressure wave approaching the end of the pipe. The way the pressure wave travels is by compressing air ahead of it and decompressing air behind it, so you end up with an area of lower pressure behind the wave. Imagine that pressure wave reaching the open end. The high pressure zone almost immediately disperses (turning into a spherical wave outside the pipe) but that still leaves the low pressure zone inside the pipe. That pulls some air back into the pipe from outside, which keeps moving inside the pipe by inertia, and basically launches a wave in reverse.

Does that help?

## 1. What is a reflection of a wave in an open pipe?

A reflection of a wave in an open pipe is when a wave traveling through the pipe encounters the end of the pipe and bounces back. This results in the wave traveling in the opposite direction.

## 2. How does the length of an open pipe affect the reflection of a wave?

The length of an open pipe affects the reflection of a wave by determining the frequency of the reflected wave. Longer pipes result in lower frequencies of reflected waves, while shorter pipes result in higher frequencies.

## 3. What happens to the amplitude of a reflected wave in an open pipe?

The amplitude of a reflected wave in an open pipe remains the same as the original wave. This means that the reflected wave will have the same maximum displacement as the original wave.

## 4. Can multiple reflections occur in an open pipe?

Yes, multiple reflections can occur in an open pipe. When a wave is reflected at the end of the pipe, it can bounce back and forth multiple times, resulting in multiple reflections.

## 5. How does the shape of an open pipe affect the reflection of a wave?

The shape of an open pipe does not affect the reflection of a wave. As long as the end of the pipe is open, the wave will reflect in the same way regardless of the shape of the pipe.

• Introductory Physics Homework Help
Replies
4
Views
1K
• Optics
Replies
3
Views
1K
• Optics
Replies
12
Views
1K
• Optics
Replies
5
Views
516
• Optics
Replies
6
Views
2K
• Optics
Replies
4
Views
722
• Optics
Replies
1
Views
831
• Optics
Replies
5
Views
1K
• Optics
Replies
6
Views
972
• Optics
Replies
2
Views
1K