Question 37. . The voltage attenuation in dB provided by 20 cm length of a 1 cm x 0.5 cm waveguide in which 1 GHz signal is propagated in dominant mode is
Answer: Option C. -> ridged waveguides have less attenuation per unit length than rectangular waveguides
Question 39. . After reflection from a plane conducting wall, electromagnetic waves acquire an apparent velocity which is greater than velocity of light in free space. It is called
