Identifying substances using critical angle

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SUMMARY

The critical angles for diamond and benzene are 24 degrees and 42 degrees, respectively. Total internal reflection occurs for angles of incidence greater than these critical angles. Therefore, for diamond, angles of incidence greater than 24 degrees (options B, C, D, E, F) will result in total internal reflection, while for benzene, angles greater than 42 degrees (options E, F) will do so. Additionally, a critical angle of 47 degrees corresponds to a substance with a refractive index of approximately 1.5, which can be identified using reference tables such as those found on HyperPhysics.

PREREQUISITES
  • Understanding of critical angle and total internal reflection
  • Familiarity with refractive indices of common substances
  • Ability to interpret data from reference tables
  • Basic knowledge of optics principles
NEXT STEPS
  • Research the concept of total internal reflection in optics
  • Learn how to calculate critical angles for various materials
  • Explore the use of refractive index tables in identifying substances
  • Investigate the applications of critical angle in fiber optics technology
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Students studying optics, physics educators, and professionals in fields related to materials science and optical engineering will benefit from this discussion.

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Homework Statement



The critical angle for diamond is 24 degrees. The critical angle for benzene is 42 degrees. Which of the following angles of incidence would results in total internal reflection in diamond and which in benzene?

A)20 degrees B)25 degrees C)30 degrees D)35 degrees E)40 degrees F) 45 degrees

Homework Equations



Don't really know tbh.

The Attempt at a Solution



I was away for a couple of days so I'm a bit lost. These were questions that were given after I completed a lab.

If you guys would be kind enough to help me out, that would be great.

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Another question I have as well

Homework Statement



If the critical angle of a substance if 47 degrees, identify the substance. Use table 1, p. 437

Well, I can't show you guys my table. But here's a site where it shows you the table (indexes of refraction)
http://hyperphysics.phy-astr.gsu.edu/hbase/tables/indrf.html

Homework Equations



--

The Attempt at a Solution



--

Thanks guys :)!
 
Physics news on Phys.org
The http://en.wikipedia.org/wiki/Critical_angle" . (Click on the links)

Use Wikipedia :wink:
 
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