railway RRB JE (CBT I + CBT II) Mock Test 2024 Electromagnetic Theory Electromagnetic Wave Propagation Wave Propagation in Lossy Medium
The phase velocity of a plane wave given by Ex = E0 cos (ωt – βz) with a frequency of 5.0 GHz and a wavelength in the material medium of 3.0 cm is:
1
3.0 × 108 m/sec
2
1.5 × 108 m/sec
3
5 × 108 m/sec
4
None