When electromagnetic waves are propagated in a waveguide
a) They travel along the walls of the waveguide b) They travel through the dielectric without touching the walls c) They are reflected from the walls but do not travel along the walls d) None of these
a) They travel along the walls of the waveguide b) They travel through the dielectric without touching the walls c) They are reflected from the walls but do not travel along the walls d) None of these