Shivam sharma Asked a Question
September 6, 2020 4:20 pmpts 30 pts
The optic axis interference figure of a hypothetical uniaxial mineral is shown below. The mineral has indices of refraction (R.Is) of 1.54 and 1.55. The colors in the different quadrants of the interference figure reflect the effects of insertion of gypsum (Gyps) plate, the fast vibration direction of which marked in the figure. Yellow What is the optic sign of the mineral? State the value of the RI. of the mineral, corresponding to its E-ray (n). i) What is the value of the birefringence of the mineral in the optic orientation shown in the figure above? () (11)
  • 2 Answer(s)
  • like-1
  • Shares
  • Rahul pandey Best Answer
    1. Optic sign of the mineral is -ve (Uniaxial); For details see the attached figure 2. 1.54 Since mineral is uniaxial negative so RI of o-ray should be greater than RI of e ray. O...
    Show more
    • cropped4726387027362895582.jpg
    Likes(0) Reply(0)
  • Sajan sarthak sahoo thankyou
    1.optic sign is optically negative. as slow ray is o -ray 2. E ray has refractive index 1.54. 3. birefringence is (1.55-1.54)= 0.01 i.e ( slowray -fast ray) refractive ind...
    Show more
    Likes(0) Reply(0)
  • Rahul pandey
    There is a minor correction in part (iii) of this question. Here for this particular section shown in the question (looking down the optic axis i.e. circular section) the birefring...
    Show more
    • cropped2524716335418214378.jpg
    Likes(0) Reply(0)
Head Office :
MPA 44, 2nd floor, Rangbari main Road Mahaveer Nagar II, Kota (Raj.) - 324005

Branch Office (Jaipur):
Shyam Tower, Plot No. F2, 6th Floor Amrapali Circle,
Vaishali Nagar, Jaipur, Rajasthan 302021

All Rights Reserved ©