Question

The reflection coefficient of a wave travelling through two media having electric intrinsic impedances of 3 and 5 respectively is

(a) 2

(b) 8

(c) ^5⁄3

(d) 1/4

This question was posed to me in quiz.

Query is from Intrinsic Impedance and Propagation Constant in section Transmission Lines of Electromagnetic Theory

Answer 1

Correct option is (d) 1/4

Easy explanation: The reflection coefficient in terms for intrinsic impedance is R= η2-η1/η2+η1. On substituting the given data, we get R = 5 – 3/5 + 3 = 2/8 = ¼.