Question

The product of the phase and the group velocities is given by the (a) Speed of light (b) Speed of light/2 (c) 2 x Speed of light (d) (speed of light)/4 The question was posed to me during an internship interview. Query is from Phase and Group Velocity in portion Waveguides 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 (d) (speed of light)/4 Best explanation: The product of the phase and the group velocities is given by the square of the speed of the light. Thus Vp x Vg = c^2 is the relation.