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Calculate the velocity of a wave with frequency 2 x10^9 rad/s and phase constant of 4 x 10^8 units.(a) 0.5(b) 5(c) 0.2(d) 2I have been asked this question during an internship interview.Question is taken from Lossy and Lossless Dielectrics topic in section EM Wave Propagation of Electromagnetic Theory

Answer»

Right CHOICE is (b) 5

To explain I would SAY: The VELOCITY of a wave is the ratio of the FREQUENCY to the phase constant. Thus V = ω/β. On substituting the given values, we get V = 2 x10^9/ 4 x 10^8 = 5 UNITS.



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