Biprism and Interference Patterns

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Questions and Answers

What is the primary function of a Biprism?

To measure angles of incidence
To produce coherent light sources (correct)
To disperse light into a spectrum
To magnify objects through refraction

What characteristic angle does the Biprism have at one of its vertices?

179 degrees (correct)
90 degrees
45 degrees
60 degrees

When light is incident on a biprism, how does it appear to emerge?

From two virtual sources S1 and S2 (correct)
From a real source S
As a single coherent beam
From a diffracted point source

What happens to the ray of light passing through a prism?

<p>It bends through an angle called angle of deviation (D)</p> Signup and view all the answers

What effect does arranging two prisms base to base have on light passage?

<p>It makes the light appear to come from two virtual sources (B)</p> Signup and view all the answers

Study Notes

Biprism

A biprism is a device used to create coherent light sources, demonstrating interference patterns.
It's constructed by grinding and polishing a thin glass plate to form a prism with a large angle (nearly 179°) and two small side angles (0.5° each).
When light passes through an ordinary prism, it deviates, making it appear as though the light originates from a virtual source (S') slightly above the actual source (S).
When two biprisms are positioned base-to-base, light undergoes refraction, creating the illusion of two virtual sources (S1 and S2).
These virtual sources act as coherent sources, enabling interference patterns to be observed.

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Description

Explore the fascinating concepts of biprisms and their role in producing coherent light sources. This quiz covers the construction and function of biprisms, including their ability to create interference patterns by simulating virtual sources. Test your understanding of optics and light behavior with this engaging quiz!