Question

The velocity of a wave travelling in the air medium without transmission lines or waveguides(wireless) is (a) 6 x 10^8 (b) 3 x 10^8 (c) 1.5 x 10^8 (d) 9 x 10^8 This question was addressed to me during an online exam. This question is from Plane Waves in Free Space 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

Correct choice is (b) 3 x 10^8 Explanation: In free space or air medium, the velocity of the wave propagating will be same as that of the light. Thus the velocity is the speed of light, V = c. It is given by 3 x 10^8m/s.