Question

What is the value of the effective radius factor k of earth if the radius of curvature and the earth radius equals?

(a) 1

(b) 0

(c) Infinity

(d) 4/3

The question was asked during an online interview.

I want to ask this question from Space Wave Propagation in section Space Wave Propagation of Antennas

Answer 1

Right choice is (c) Infinity

For explanation I would say: Effective radius factor k in terms of radius of curvature rc and radius of earth re is

\(k=\frac{1}{1-\frac{r_e}{r_c}}=\frac{1}{0}=∞.\)