Question

Find the Brewster angle of a wave transmitted from a medium of permittivity 4 to a medium of permittivity 2. (a) 35.26 (b) 53.62 (c) 26.35 (d) 62.53 I got this question by my college professor while I was bunking the class. This key question is from Brewster Angle topic in chapter 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

Correct option is (a) 35.26 Best explanation: The Brewster angle is given by θb = tan^-1(n2/n1), where n = √ε. Thus we can express the formula in terms of permittivity as θb = tan^-1√ (ε 2/ε 1). Here ε1 = 4 and ε2 = 2. Thus we get θb = tan^-1√ (2/4) = tan^-1(0.707) = 35.26 degree.