Question

The power transmitted by a wave with incident power of 16 units is(Given that the reflection coefficient is 0.5) (a) 12 (b) 8 (c) 16 (d) 4 The question was posed to me in quiz. The origin of the question is Power, Power Loss and Return Loss 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

The correct answer is (a) 12 The best explanation: The fraction of the transmitted to the incident power is given by the reflection coefficient. Thus Pref = (1-R^2) Pinc. On substituting the given data, we get Pref = (1- 0.5^2) x 16 = 12 units. In other words, it is the remaining power after reflection.