Q1.
The electric field of an electromagnetic wave propagating in non-conducting medium is:
ec{E} = hat{i} 10 cos (6pi imes 10^7t – 0.4 pi z) V/m. The phase velocity is
- (1) 5π × 108 m/sec.
- (2) 5 × 108 m/sec.
- (3) 5π × 108 cm/sec.
- (4) 5 × 108 cm/sec.
- (5) Question not attempted