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$Diffraction Quiz$

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Diffraction Quiz

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Questions and Answers

What is the phenomenon called when waves encounter an obstacle or small opening and bend around the edges?

Interference

Refraction

Diffraction (correct)

Polarization

Under what condition does a plane wave not bend at the slit?

$a = \lambda$

Depends on the material of the obstacle

$a < \lambda$

$a > \lambda$ (correct)

Which type of diffraction deals with non-plane wavefronts and is experimentally simple but analytically complex?

Fresnel Diffraction (correct)

Fraunhofer Diffraction

Double-slit Diffraction

Grating Diffraction

What did Dominique Arago observe in 1881 when a circular disc or coin was placed between a point source and a screen?

<p>Alternate dark and bright rings with the central bright ring</p> Signup and view all the answers

What type of diffraction deals with parallel rays and plane wavefronts, and is mostly used for explanation due to the easily achieved conditions?

<p>Fraunhofer Diffraction</p> Signup and view all the answers

Study Notes

Diffraction of Waves

The phenomenon of waves bending around the edges of an obstacle or small opening is called diffraction.
A plane wave does not bend at the slit when its wavelength is much smaller than the size of the slit.
The type of diffraction that deals with non-plane wavefronts and is experimentally simple but analytically complex is called Fresnel diffraction.
In 1881, Dominique Arago observed that when a circular disc or coin was placed between a point source and a screen, the shadow of the disc had a bright spot in the center, which is known as Poisson's spot.
The type of diffraction that deals with parallel rays and plane wavefronts, and is mostly used for explanation due to the easily achieved conditions, is called Fraunhofer diffraction.

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Description

Test your knowledge of the wave nature of light with this quiz on diffraction. Explore how light waves bend around obstacles and openings, confirming the wave nature of light through this phenomenon.