The velocity of a wave travelling in the air medium without transmission lines or waveguides(wireless) is

The velocity of a wave travelling in the air medium without transmissi

1.	The velocity of a wave travelling in the air medium without transmission lines or waveguides(wireless) is
A.	t6 x 10<sup>8</sup>
B.	t3 x 10<sup>8</sup>
C.	t1.5 x 10<sup>8</sup>
D.	t9 x 10<sup>8</sup>
Answer» C. t1.5 x 10<sup>8</sup>