Question

Skip distance is the _____

(a) Minimum distance at which wave returns back at the lowest possible frequency

(b) Maximum distance at which wave returns back at the critical frequency

(c) Minimum distance at which wave returns back at the critical angle

(d) Maximum distance at which wave returns back at the lowest possible frequency

I had been asked this question in semester exam.

My doubt is from Maximum Usable Frequency topic in portion Virtual Height, Critical Frequency and Muf of Antennas

Answer 1

Right choice is (c) Minimum distance at which wave returns back at the critical angle

To explain I would say: The minimum distance at which the wave returns back at the critical angle is called skip distance.