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Compute the refractive index when the dielectric constant is 256 in air.(a) 2562(b) 16(c) 256(d) 64This question was posed to me during an internship interview.My doubt stems from Electric Fields in Material Space in chapter Electric Fields in Material Space of Electromagnetic Theory

Answer» CORRECT choice is (b) 16

Easy explanation: By Maxwell RELATION, εr = n^2, where εro is the dielectric CONSTANT at OPTICAL frequencies and n is the refractive index.For the given dielectric constant we GET n = 16.


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