Question

The refractive index of a medium with permittivity of 2 and permeability of 3 is given by (a) 3.56 (b) 2.45 (c) 3.21 (d) 1.78 This question was posed to me in class test. Enquiry is from Snell Law and Critical Angle topic in section EM Wave Propagation of Electromagnetic Theory Select the correct answer from above options Electromagnetic Theory questions and answers, Electromagnetic Theory questions pdf, Electromagnetic Theory question bank, Electromagnetic Theory questions and answers pdf, mcq on Electromagnetic Theory pdf,electromagnetic theory book pdf,electromagnetic theory pdf notes,electromagnetic theory lecture notes,electromagnetic theory of light,maxwell electromagnetic theory,electromagnetic theory proposed by,electromagnetic theory engineering physics,electromagnetic theory nptel

Answer 1

The correct choice is (b) 2.45 To explain: The refractive index is given by n = c √(με), where c is the speed of light. Given that relative permittivity and relative permeability are 2 and 3 respectively. Thus n = 3 x 10^8 √(2 x 4π x 10^-7 x 3 x 8.854 x 10^-12) = 2.45.