# How does the size of an obstacle affect the diffraction of a wave?

## How does the size of an obstacle affect the diffraction of a wave?

For any given obstacle or opening, waves with longer wavelengths bend more than waves with shorter wavelengths. If the wavelength is smaller than the obstacle or opening, then diffraction barely happens at all.

### What is the relation between the wavelength of wave and size of the obstacle for diffraction to take place?

Diffraction is the spreading out of waves as they pass through an aperture or around objects. It occurs when the size of the aperture or obstacle is of the same order of magnitude as the wavelength of the incident wave. For very small aperture sizes, the vast majority of the wave is blocked.

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What is diffraction of light what should be the size of the obstacle to observe diffraction?

A : To observe diffraction of light the size of obstacle/aperture should be of the order of 10-7m.

How is diffraction related to wavelength?

In short, the angle of diffraction is directly proportional to the size of the wavelength. Hence red light (long wavelength) diffracts more than blue light (short wavelength). And radio waves (really long wavelength) diffract more than X-rays (really short wavelengths).

## Why is diffraction more observable for sound than for light?

Hint: The reason for the diffraction of sound waves being more evident in daily experience than light waves is that sound waves have much higher wavelength compared to the visible light waves. For diffraction to occur, the slit width should be comparable to the wavelength of the light or sound waves.

### What happens to the diffraction pattern as the aperture becomes larger?

The smaller the object the wave interacts with, the more spread there is in the interference pattern. Increasing the size of the opening reduces the spread in the pattern.

What should be the order of size of an obstacle or aperture to produce diffraction of light?

10-7m.
A : To observe diffraction of light the size of obstacle/aperture should be of the order of 10-7m. > R : 10-7m is the order of wavelength of visible light.

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When size of the obstacle in the path of sound is small compared to its wavelength which of the following effects will be observed?

When the wavelength is bigger than an obstacle, then the sound waves mostly bend around the obstacle. When the wavelength is smaller than an obstacle, then the sound waves mostly bend around the obstacle.

## What is condition to observe the diffraction of waves clearly?

Diffraction is observed of light waves but only when the waves encounter obstacles with extremely small wavelengths (such as particles suspended in our atmosphere).

### What is the diffraction grating of wavelength?

A diffraction grating is an optical element that divides(disperses) light composed of lots of different wavelengths(e.g., white light) into light components by wavelength. The simplest type of grating is one with a large number of evenly spaced parallel slits.

Is diffraction wavelength dependent?

The amount of diffraction depends on the wavelength of light, with shorter wavelengths being diffracted at a greater angle than longer ones (in effect, blue and violet light are diffracted at a higher angle than is red light).

When is diffraction observable?

Diffraction is observable when the size of the obstacle/aperture is comparable to the wavelength of the light used. Why is this so? – Quora Diffraction is observable when the size of the obstacle/aperture is comparable to the wavelength of the light used.