Reflecting Prism Homework: Min Refractive Index & Ray Path

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SUMMARY

The minimum refractive index (ni) of the prism required for light to reflect is calculated to be 1.3, using the equation nisin(theta 1) = ntsin(theta 2) with nt set to 1 and theta 2 at 90 degrees. The discussion also addresses a ray path issue related to the reflecting prism, although specific details on the error in the ray path were not provided. Further analysis is needed to clarify the incorrect aspects of the ray path presented in the attached graph.

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Homework Statement



a)What is the minimum refractive index of the prism in order for the light to reflect?
b) What is wrong with this ray path for a reflecting prism?


Homework Equations



nisin(theta 1)= ntsin(theta 2)

The Attempt at a Solution


for part a, nt is 1, theta 2 is 90 degree, theta 1 is 50 degree,
then i got ni = 1.3
For part b, i have no idea about it..
 

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the graph is attached now...
 

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