Application of Reflection of Waves

Reflection of waves is the most widely used concept in science. Some of the  most common applications of the reflection of waves are,

Echo

If we utter some words standing at some distance near a hill, tall building, big tree, etc., then due to reflection, the same words are heard again. This phenomenon is called Echo. Thus, the phenomenon of repetition of sound due to the reflection of sound from a rigid boundary is called echo.

The condition for the human ear to hear an echo is that the reflected sound must reach the ear after 0.1 sec as our brain takes 0.1 sec to process the incoming sound waves. As we know the general speed of sound in air is 330 m/s the general distance at which we can hear an echo is calculated to be 17 m.

 

Sonar

SONAR Its full name is “Sound Navigation and Ranging”. It is based on the principle of reflection of ultrasonic waves. With its help, the position of anybody inside the sea such as a rock, enemy submarine, etc. is detected.  The depth of the sea is also known by this technique.

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Reflection of Waves

Waves are the disturbance created in the surroundings which are used to transport energy from point A to point B without transfer of matter. We also see different types of waves in our surroundings, when we throw a stone in the quiet pond we observe a disturbance travelling in the pond water formed by the striking of the stone this disturbance is called the wave.

Waves are found in many forms such as,

  • Sound Waves
  • Light Waves
  • Water Waves
  • Radioactive Waves
  • Ultraviolet Waves
  • Mechanical Waves

Energy is transferred through waves. The reflection of waves is the bouncing back of the wave after striking a hard surface.

In this article, we will learn about the reflection of waves, the laws of reflection of waves, etc.

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What is Reflection of Waves

When a wave travelling in any medium hit the boundary it returns back in the medium after striking. This phenomenon is called Reflection of Waves....

Laws of Reflection

All the waves in nature follow the laws of reflection. The most general example of this is the laws of reflection of light....

Fixed End Reflection

Suppose the end B of a string AB is tied to a rigid base, a wave pulse is sent from its end A from left to right. If the displacement of the particles in this pulse is upward. When this pulse reached a firm base, it exerts a force on the base in an upward direction. Consequently, according to Newton’s third low motion, a firm base that exerts the same reaction force produces a pulse that starts moving in the opposite direction (from right to left) with the help of a string. This is reflected pulse....

Free End Reflection

Suppose the end B of the string AB is attached to a small ring which can make frictionless oscillations in a vertical rod. A wave pulse is sent from left to right in the string. Suppose the displacement of the particles of the string is upwards. When this pulse reaches end B, it exerts an upward force on this end B. Hence the ring attached to end B moves upwards....

Reflection of Longitudinal Wave from Rigid End

If end B of spring AB is tied to a rigid base. With the help of this spring, a compression pulse is sent from left to right (from A to B). When the pulse reaches end B, it exerts a force on a rigid base from left to right. According to Newton’s third law of motion, a rigid base exerts an equal reaction force on the spring end B from right to left....

Reflection of Longitudinal Wave from Free End

Let AB be a spring. A compression pulse moves from end A to B i.e. from left to right with the help of spring. When it reaches the free end B, the pulse exerts a force on B from left to right. Due to this force, end B crosses the equilibrium position and moves to the right. Hence, the length of the spring increases, and the rarefaction pulse starts moving from right to left, but still, the direction of displacement of the spring particles remains the same. Therefore, there is no change in its phase due to the reflection of the longitudinal pulse from the free boundary....

Reflection of Sound

As we know all the waves get reflected when struck with a hard surface. Sound waves are no different they also get reflected striking a barrier....

Application of Reflection of Waves

Reflection of waves is the most widely used concept in science. Some of the  most common applications of the reflection of waves are,...

FAQs on Echo

Q1: What is Reflection of Wave?...