Are the rays parallel after they come out of the prism?

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Homework Help Overview

The discussion revolves around the behavior of light rays as they pass through a prism, specifically whether they remain parallel after exiting the prism. The subject area is optics, focusing on the principles of refraction and the conditions affecting light propagation through a medium.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants explore the conditions under which light rays may remain parallel after refraction, considering factors such as incidence angles and wavelengths. There is a discussion on the geometric aspects of light behavior in prisms.

Discussion Status

Some participants have offered insights regarding the necessity of equal wavelengths for the rays to remain parallel, while others affirm that the discussion is focused on the geometric interpretation of light. Multiple perspectives on the assumptions regarding wavelength and light behavior are being explored.

Contextual Notes

There is an underlying assumption that the discussion pertains to a monochromatic case, which may influence the conclusions drawn about the parallelism of the rays.

zade70
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Homework Statement


Two rays of light fall on a surface of the prism. Do they remain parallel after they come out from the prism?

Homework Equations


sina/sinb=n2/n1

The Attempt at a Solution


I think they do, as the incidence angles are equal, the refraction angles are equal they become incidence angles which are still equal and will have equal refraction angles.
 
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They will remain parallel only if they have the same wavelengths.
 
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blue_leaf77 said:
They will remain parallel only if they have the same wavelengths.
We are studying at the light just in the geometrical aspect. Can you give me a hist to solve it basing on it?
 
zade70 said:
We are studying at the light just in the geometrical aspect.
Then I guess the lecture currently still assume monochromatic (single wavelength) case and of course your answer should be correct.
 
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