Find the Brewster angle of a wave transmitted from a medium of permittivity 4 to a medium of permittivity 2.
Find the Brewster angle of a wave transmitted from a medium of permittivity 4 to a medium of permittivity 2. Correct Answer 35.26
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.