Anukruti posted an Question
August 17, 2020 • 16:30 pm 30 points
  • IIT JAM
  • Geology (GG)

Question(in figure)

2 Answer(s) Answer Now
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    Sajan sarthak Best Answer

    1.658 is the refractive index of slow ray

    cropped6078508213927039582.jpg
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    i m a bit confused.

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    why

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    RI of O RAY=1.486-0.172 ???because birefringence=RI of e ray-ri -RI of O ray

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    then it is coming 1.314

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    birefringence=(slowray -fast Ray) refractive index

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    study theses attached file

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    Rahul kumar best-answer

    Ans: 1.314 Please find the detailed solution in attachment

    cropped4204350609852201416.jpg
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    answer is 1.658

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    Ok, it's uniaxia -ve mineral so the refractive index of O-ray should be greater than refractive index of E-ray. I would suggest you to take birefringence= O ray - E ray, so at the very last step it will be 1.486+0.172= 1.658

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    I can upload an updated solution if you want. Please let me know

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