(a) Explain the phenomenon of double refraction of light and give a d…

Question

(a) Explain the phenomenon of double refraction of light and give a description of doubly refracting crystals. Describe the construction of Nicol prism and discuss how it can be used as a polarizer and as an analyzer

(b) Newton's rings are observed in reflected light of $\lambda = 5.9 \times 10^{-5}\text{ cm}$. The diameter of 10th dark ring is $0.5\text{ cm}$. Find the radius of curvature of the lens and the thickness of the air film

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